V2 class

Features:     Powerful Tube sound for Audio players     Parallel 3.5mm and RCA stereo inputs     High-quality Shuguang 12AU7 tube, Pure Class A Tube amp, No op amp IC     Cute and Beautiful looking     Powerful dynamic and sweet TUBE sound In Put Power: DC24V Input Sensitivity: 100mV Input Impedance: 100KOhm Out-Put Impedance: Ohm Gain: 30dB Frequency response: 10Hz-60KHz +/- 0.25dB Signal/Noise Ratio: >90dB Dynamic range: 84.6dBA(300 ohm) 89.8dBA(33 ohm) THD: ohm) ohm)I MD + Noise: ohm) ohm) Dimension: 79mm (D) X 79mm (W) X 44mm (H) Input: Stereo RCA x1, Stereo 3.5mm x1 Outpu: Stereo 6.35mm x1 Package Include: Bravo V2 Tube Headphone Amp x1 ShuGuang 12AU7 Tube x1 AC Power Adapter V/ Hz, 24V1A x1 6.5mm to 3.5mm Headphone Jack adapter x1 Power Cable w/ wall plug x1 This item is shipped from Hong Kong.        

Features:     Powerful Tube sound for Audio players     Parallel 3.5mm and RCA stereo inputs     High-quality Shuguang 12AU7 tube, Pure Class A Tube amp, No op amp IC     Cute and Beautiful looking     Powerful dynamic and sweet TUBE sound In Put Power: DC24V Input Sensitivity: 100mV Input Impedance: 100KOhm Out-Put Impedance: Ohm Gain: 30dB Frequency response: 10Hz-60KHz +/- 0.25dB Signal/Noise Ratio: >90dB Dynamic range: 84.6dBA(300 ohm) 89.8dBA(33 ohm) THD: ohm) ohm)I MD + Noise: ohm) ohm) Dimension: 79mm (D) X 79mm (W) X 44mm (H) Input: Stereo RCA x1, Stereo 3.5mm x1 Outpu: Stereo 6.35mm x1 Package Include: Bravo V2 Tube Headphone Amp x1 ShuGuang 12AU7 Tube x1 AC Power Adapter V/ Hz, 24V1A x1 6.5mm to 3.5mm Headphone Jack adapter x1 Headphone is not included in the package. This item is shipped from Hong Kong.          

Compact and affordable, the ever-popular TubePre V2 professional tube preamplifier employs our popular XMAX Class A solid-state preamp, followed in the signal path by a 12AX7 vacuum-tube stage. A dual-servo (no capacitors) gain stage lets you boost the signal to smoking hot levels without significantly increasing noise. Discrete components and high-voltage operation offer dynamic range and detail not found in other single-channel tube preamps in its class. Built tough enough for serious gigging, the TubePre V2 is a great choice for guitars and microphones alike.

Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone -built-in 520mAh lithium battery, Operating Range up to 10m, Total Power 3W, Mini-USB port, MicroSD card slot- Deep Grey, Retail Box, 1 year Limited Warranty Product Overview The Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone and built-in 520mAh lithium battery allows you to share your music with the world whether you are on the go or just chilling around. Take advantage of great sound packed in a compact format with lots of cool features such as Bluetooth connectivity and built-in mic and volume controls. Enjoy it in the garden, on the patio, at the park, at the beach, on a picnic or really for any other indoor or outdoor activity! It lets you enjoy great sound whenever and wherever. Connect your phone, iPhone, iPad, iPod or other Bluetooth enabled device to stream music. The built-in microphone lets you take calls from anywhere in a room. The line-in function lets you enjoy full quality sound even on your devices without Bluetooth. The compact and portable design makes this speaker perfect for the on-the-go user. Features ¿ Support Bluetooth protocol specifications CLASS 2 ¿ Backward compatible with V2.0, V1.2 and V1.1 versions ¿ Works with iPod, iPhone, mobile phone, computer etc. ¿ Mini design for easy portability. ¿ Built-in microphone for hand-free wireless communication Specifications ¿ Stock code- BS-S10 (Deep Grey) ¿ Description - Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone ¿ Mini Design, Portable ¿ Bluetooth Version V2.1 ¿ Connection Wireless ¿ Large 45mm driver delivers precise highs for superb sound ¿ Support Phone/ Laptop/ Table PC/ TF card (Mini Micro card) ¿ Support A2DP, AVRCP, headset, hands free profile ¿ Functions AUX Function, Stereo ¿ Interface 3.5mm Audio, Micro USB ¿ Speaker Output: 3w ¿ Battery Types Li-ion battery ¿ Battery Capacity 520mAh ¿ Working Time 4-6 hours ¿ Protocol AVRCP, A2DP ¿ Transmission distance W/O obstacles 10m ¿ Frequency 280Hz-16KHz ¿ SNR >= 95dB ¿ Sensitivity 95dB ¿ Impedance 4 ohm ¿ Dimension: 60 x 60 x 50mm ¿ Net Weight: 230g ¿ Colour: Deep Grey Package Include ¿ Package Contents 1 x Speaker ¿ 1 x Cable ¿ 1 x English User Manual

Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone -built-in 520mAh lithium battery, Operating Range up to 10m, Total Power 3W, Mini-USB port, MicroSD card slot - Royal Blue, Retail Box, 1 year Limited Warranty Product Overview The Geeko Mini Rechargeable Bluetooth Version V2.1 Royal Blue Speaker with Microphone and built-in 520mAh lithium battery allows you to share your music with the world whether you are on the go or just chilling around. Take advantage of great sound packed in a compact format with lots of cool features such as Bluetooth connectivity and built-in mic and volume controls. Enjoy it in the garden, on the patio, at the park, at the beach, on a picnic or really for any other indoor or outdoor activity! It lets you enjoy great sound whenever and wherever. Connect your phone, iPhone, iPad, iPod or other Bluetooth enabled device to stream music. The built-in microphone lets you take calls from anywhere in a room. The line-in function lets you enjoy full quality sound even on your devices without Bluetooth. The compact and portable design makes this speaker perfect for the on-the-go user. Features ¿ Support Bluetooth protocol specifications CLASS 2 ¿ Backward compatible with V2.0, V1.2 and V1.1 versions ¿ Works with iPod, iPhone, mobile phone, computer etc. ¿ Mini design for easy portability. ¿ Built-in microphone for hand-free wireless communication Specifications ¿ Stock code- BS-S10RB (Royal Blue) ¿ Description - Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone ¿ Mini Design, Portable ¿ Bluetooth Version V2.1 ¿ Connection Wireless ¿ Large 45mm driver delivers precise highs for superb sound ¿ Support Phone/ Laptop/ Table PC/ TF card (Mini Micro card) ¿ Support A2DP, AVRCP, headset, hands free profile ¿ Functions AUX Function, Stereo ¿ Interface 3.5mm Audio, Micro USB ¿ Speaker Output: 3w ¿ Battery Types Li-ion battery ¿ Battery Capacity 520mAh ¿ Working Time 4-6 hours ¿ Protocol AVRCP, A2DP ¿ Transmission distance W/O obstacles 10m ¿ Frequency 280Hz-16KHz ¿ SNR >= 95dB ¿ Sensitivity 95dB ¿ Impedance 4 ohm ¿ Dimension: 60 x 60 x 50mm ¿ Net Weight: 230g ¿ Colour: Royal Blue NB: Pictures may differ from actual Product Package Include ¿ Package Contents 1 x Speaker ¿ 1 x Cable ¿ 1 x English User Manual

Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone -built-in 520mAh lithium battery, Operating Range up to 10m, Total Power 3W, Mini-USB port, MicroSD card slot - Striped Green, Retail Box, 1 year Limited Warranty Product Overview The Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone and built-in 520mAh lithium battery allows you to share your music with the world whether you are on the go or just chilling around. Take advantage of great sound packed in a compact format with lots of cool features such as Bluetooth connectivity and built-in mic and volume controls. Enjoy it in the garden, on the patio, at the park, at the beach, on a picnic or really for any other indoor or outdoor activity! It lets you enjoy great sound whenever and wherever. Connect your phone, iPhone, iPad, iPod or other Bluetooth enabled device to stream music. The built-in microphone lets you take calls from anywhere in a room. The line-in function lets you enjoy full quality sound even on your devices without Bluetooth. The compact and portable design makes this speaker perfect for the on-the-go user. Features ¿ Support Bluetooth protocol specifications CLASS 2 ¿ Backward compatible with V2.0, V1.2 and V1.1 versions ¿ Works with iPod, iPhone, mobile phone, computer etc. ¿ Mini design for easy portability. ¿ Built-in microphone for hand-free wireless communication Specifications ¿ Stock code- BS-S10SG ¿ Description - Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone ¿ Mini Design, Portable ¿ Bluetooth Version V2.1 ¿ Connection Wireless ¿ Large 45mm driver delivers precise highs for superb sound ¿ Support Phone/ Laptop/ Table PC/ TF card (Mini Micro card) ¿ Support A2DP, AVRCP, headset, hands free profile ¿ Functions AUX Function, Stereo ¿ Interface 3.5mm Audio, Micro USB ¿ Speaker Output: 3w ¿ Battery Types Li-ion battery ¿ Battery Capacity 520mAh ¿ Working Time 4-6 hours ¿ Protocol AVRCP, A2DP ¿ Transmission distance W/O obstacles 10m ¿ Frequency 280Hz-16KHz ¿ SNR >= 95dB ¿ Sensitivity 95dB ¿ Impedance 4 ohm ¿ Dimension: 60 x 60 x 50mm ¿ Net Weight: 230g ¿ Colour: Striped Green Package Include ¿ Package Contents 1 x Speaker ¿ 1 x Cable ¿ 1 x English User Manual

Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone -built-in 520mAh lithium battery, Operating Range up to 10m, Total Power 3W, Mini-USB port, MicroSD card slot ¿ Yellow, Retail Box, 1 year Limited Warranty Product Overview The Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone and built-in 520mAh lithium battery allows you to share your music with the world whether you are on the go or just chilling around. Take advantage of great sound packed in a compact format with lots of cool features such as Bluetooth connectivity and built-in mic and volume controls. Enjoy it in the garden, on the patio, at the park, at the beach, on a picnic or really for any other indoor or outdoor activity! It lets you enjoy great sound whenever and wherever. Connect your phone, iPhone, iPad, iPod or other Bluetooth enabled device to stream music. The built-in microphone lets you take calls from anywhere in a room. The line-in function lets you enjoy full quality sound even on your devices without Bluetooth. The compact and portable design makes this speaker perfect for the on-the-go user. Features ¿ Support Bluetooth protocol specifications CLASS 2 ¿ Backward compatible with V2.0, V1.2 and V1.1 versions ¿ Works with iPod, iPhone, mobile phone, computer etc. ¿ Mini design for easy portability. ¿ Built-in microphone for hand-free wireless communication Specifications ¿ Stock code- BS-S10Y (Yellow) ¿ Description - Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone ¿ Mini Design, Portable ¿ Bluetooth Version V2.1 ¿ Connection Wireless ¿ Large 45mm driver delivers precise highs for superb sound ¿ Support Phone/ Laptop/ Table PC/ TF card (Mini Micro card) ¿ Support A2DP, AVRCP, headset, hands free profile ¿ Functions AUX Function, Stereo ¿ Interface 3.5mm Audio, Micro USB ¿ Speaker Output: 3w ¿ Battery Types Li-ion battery ¿ Battery Capacity 520mAh ¿ Working Time 4-6 hours ¿ Protocol AVRCP, A2DP ¿ Transmission distance W/O obstacles 10m ¿ Frequency 280Hz-16KHz ¿ SNR >= 95dB ¿ Sensitivity 95dB ¿ Impedance 4 ohm ¿ Dimension: 60 x 60 x 50mm ¿ Net Weight: 230g ¿ Colour: Yellow Package Include ¿ Package Contents 1 x Speaker ¿ 1 x Cable ¿ 1 x English User Manual

Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone -built-in 520mAh lithium battery, Operating Range up to 10m, Total Power 3W, Mini-USB port, MicroSD card slot - Striped Green, Retail Box, 1 year Limited Warranty Product Overview The Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone and built-in 520mAh lithium battery allows you to share your music with the world whether you are on the go or just chilling around. Take advantage of great sound packed in a compact format with lots of cool features such as Bluetooth connectivity and built-in mic and volume controls. Enjoy it in the garden, on the patio, at the park, at the beach, on a picnic or really for any other indoor or outdoor activity! It lets you enjoy great sound whenever and wherever. Connect your phone, iPhone, iPad, iPod or other Bluetooth enabled device to stream music. The built-in microphone lets you take calls from anywhere in a room. The line-in function lets you enjoy full quality sound even on your devices without Bluetooth. The compact and portable design makes this speaker perfect for the on-the-go user. Features • Support Bluetooth protocol specifications CLASS 2 • Backward compatible with V2.0, V1.2 and V1.1 versions • Works with iPod, iPhone, mobile phone, computer etc. • Mini design for easy portability. • Built-in microphone for hand-free wireless communication Specifications • Stock code- BS-S10SG • Description - Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone • Mini Design, Portable   • Bluetooth Version V2.1  • Connection Wireless  • Large 45mm driver delivers precise highs for superb sound • Support Phone/ Laptop/ Table PC/ TF card (Mini Micro card) • Support A2DP, AVRCP, headset, hands free profile • Functions AUX Function, Stereo  • Interface 3.5mm Audio, Micro USB  • Speaker Output: 3w • Battery Types Li-ion battery • Battery Capacity 520mAh  • Working Time 4-6 hours  • Protocol AVRCP, A2DP  • Transmission distance W/O obstacles 10m  • Frequency 280Hz-16KHz  • SNR >= 95dB  • Sensitivity 95dB  • Impedance 4 ohm  • Dimension: 60 x 60 x 50mm • Net Weight: 230g • Colour: Striped Green  Package Include   • Package Contents 1 x Speaker • 1 x Cable • 1 x English User Manual

Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone -built-in 520mAh lithium battery, Operating Range up to 10m, Total Power 3W, Mini-USB port, MicroSD card slot - Royal Blue, Retail Box, 1 year Limited Warranty Product Overview The Geeko Mini Rechargeable Bluetooth Version V2.1 Royal Blue Speaker with Microphone and built-in 520mAh lithium battery allows you to share your music with the world whether you are on the go or just chilling around. Take advantage of great sound packed in a compact format with lots of cool features such as Bluetooth connectivity and built-in mic and volume controls. Enjoy it in the garden, on the patio, at the park, at the beach, on a picnic or really for any other indoor or outdoor activity! It lets you enjoy great sound whenever and wherever. Connect your phone, iPhone, iPad, iPod or other Bluetooth enabled device to stream music. The built-in microphone lets you take calls from anywhere in a room. The line-in function lets you enjoy full quality sound even on your devices without Bluetooth. The compact and portable design makes this speaker perfect for the on-the-go user. Features • Support Bluetooth protocol specifications CLASS 2 • Backward compatible with V2.0, V1.2 and V1.1 versions • Works with iPod, iPhone, mobile phone, computer etc. • Mini design for easy portability. • Built-in microphone for hand-free wireless communication Specifications • Stock code- BS-S10RB (Royal Blue) • Description - Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone • Mini Design, Portable • Bluetooth Version V2.1 • Connection Wireless • Large 45mm driver delivers precise highs for superb sound • Support Phone/ Laptop/ Table PC/ TF card (Mini Micro card) • Support A2DP, AVRCP, headset, hands free profile • Functions AUX Function, Stereo • Interface 3.5mm Audio, Micro USB • Speaker Output: 3w • Battery Types Li-ion battery • Battery Capacity 520mAh • Working Time 4-6 hours • Protocol AVRCP, A2DP • Transmission distance W/O obstacles 10m • Frequency 280Hz-16KHz • SNR >= 95dB • Sensitivity 95dB • Impedance 4 ohm • Dimension: 60 x 60 x 50mm • Net Weight: 230g • Colour: Royal Blue NB: Pictures may differ from actual Product Package Include • Package Contents 1 x Speaker • 1 x Cable • 1 x English User Manual

Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone -built-in 520mAh lithium battery, Operating Range up to 10m, Total Power 3W, Mini-USB port, MicroSD card slot - Red, Retail Box, 1 year Limited Warranty Product Overview The Geeko Mini Rechargeable Bluetooth Version V2.1 Royal Blue Speaker with Microphone and built-in 520mAh lithium battery allows you to share your music with the world whether you are on the go or just chilling around. Take advantage of great sound packed in a compact format with lots of cool features such as Bluetooth connectivity and built-in mic and volume controls. Enjoy it in the garden, on the patio, at the park, at the beach, on a picnic or really for any other indoor or outdoor activity! It lets you enjoy great sound whenever and wherever. Connect your phone, iPhone, iPad, iPod or other Bluetooth enabled device to stream music. The built-in microphone lets you take calls from anywhere in a room. The line-in function lets you enjoy full quality sound even on your devices without Bluetooth. The compact and portable design makes this speaker perfect for the on-the-go user. Features • Support Bluetooth protocol specifications CLASS 2 • Backward compatible with V2.0, V1.2 and V1.1 versions • Works with iPod, iPhone, mobile phone, computer etc. • Mini design for easy portability. • Built-in microphone for hand-free wireless communication Specifications • Stock code- BS-10R (Red) • Description - Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone • Mini Design, Portable • Bluetooth Version V2.1 • Connection Wireless • Large 45mm driver delivers precise highs for superb sound • Support Phone/ Laptop/ Table PC/ TF card (Mini Micro card) • Support A2DP, AVRCP, headset, hands free profile • Functions AUX Function, Stereo • Interface 3.5mm Audio, Micro USB • Speaker Output: 3w • Battery Types Li-ion battery • Battery Capacity 520mAh • Working Time 4-6 hours • Protocol AVRCP, A2DP • Transmission distance W/O obstacles 10m • Frequency 280Hz-16KHz • SNR >= 95dB • Sensitivity 95dB • Impedance 4 ohm • Dimension: 60 x 60 x 50mm • Net Weight: 230g • Colour: Red NB: Pictures may differ from actual Product Package Include • Package Contents 1 x Speaker • 1 x Cable • 1 x English User Manual

Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone -built-in 520mAh lithium battery, Operating Range up to 10m, Total Power 3W, Mini-USB port, MicroSD card slot - Striped Green, Retail Box, 1 year Limited Warranty Product Overview The Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone and built-in 520mAh lithium battery allows you to share your music with the world whether you are on the go or just chilling around. Take advantage of great sound packed in a compact format with lots of cool features such as Bluetooth connectivity and built-in mic and volume controls. Enjoy it in the garden, on the patio, at the park, at the beach, on a picnic or really for any other indoor or outdoor activity! It lets you enjoy great sound whenever and wherever. Connect your phone, iPhone, iPad, iPod or other Bluetooth enabled device to stream music. The built-in microphone lets you take calls from anywhere in a room. The line-in function lets you enjoy full quality sound even on your devices without Bluetooth. The compact and portable design makes this speaker perfect for the on-the-go user. Features • Support Bluetooth protocol specifications CLASS 2 • Backward compatible with V2.0, V1.2 and V1.1 versions • Works with iPod, iPhone, mobile phone, computer etc. • Mini design for easy portability. • Built-in microphone for hand-free wireless communication Specifications • Stock code- BS-S10SG • Description - Geeko Mini Rechargeable Bluetooth Version V2.1 Speaker with Microphone • Mini Design, Portable • Bluetooth Version V2.1 • Connection Wireless • Large 45mm driver delivers precise highs for superb sound • Support Phone/ Laptop/ Table PC/ TF card (Mini Micro card) • Support A2DP, AVRCP, headset, hands free profile • Functions AUX Function, Stereo • Interface 3.5mm Audio, Micro USB • Speaker Output: 3w • Battery Types Li-ion battery • Battery Capacity 520mAh • Working Time 4-6 hours • Protocol AVRCP, A2DP • Transmission distance W/O obstacles 10m • Frequency 280Hz-16KHz • SNR >= 95dB • Sensitivity 95dB • Impedance 4 ohm • Dimension: 60 x 60 x 50mm • Net Weight: 230g • Colour: Striped Green Package Include • Package Contents 1 x Speaker • 1 x Cable • 1 x English User Manual

Mini Bluetooth V2.1 EDR Music Receiver Adapter for Phone Samsung Galaxy S6 5 Notebook Speaker Features: It is a stereo Bluetooth receiver especially designed for dock station Plug this receiver into dock station, the music will be transmitted to dock station from your mobile phone which have Bluetooth stereo function It is fully plug & play and it does not need extra power Bluetooth version: Bluetooth V2.1 + EDR, Class 2 Bluetooth profiles: A2DP & AVRCP Bluetooth frequency range: 2.4GHz - 2.4835GHz Effective range: 10 meters Size: Approx. 4.6 x 3.7 x 0.9cm/ 1.8 x 1.5 x 0.4 inch Connecting Receiver to the dock station: Turn on the dock station before plugging the receiver Then set the audio source to mobile Finally plug the receiver into the dock connector port and the receiver will start to flash blue and red alternately. Package Included: 1 x Bluetooth V2.1 EDR Music Receiver

Assembled J-Head V2.0 GT9 Extruder Head 0.3-0.5mm Nozzle Kit For 3D Printer Specifications: Applicable materials: Available 3mm/1.75mmPLA and ABS (not included) Printing precision: 0.1mm Material: Metal Weight: 525g Voltage: 12V Nozzle temperature:180°C-260°C Nozzle flow rate: about 24cc / h Molding method: FDM melt laminating Size: 85 x 53 x 119mm Extrusion nozzle: 0.3mm, 0.35mm, 0.4mm, 0.5mm Thermistors: 100K1% precision NTC thermistors Movement speed: 50cc Component: 1. 42 Stepper motor: 2 Phase Weight: 0.4kg Step Angle: 1.8±5% degree Voltage: 12V DC Current: 12A / phase Holding torque: 48N.cm Min. Phase Resistance: 10.0±10% Ω(phase) Phase Inductance: 20±20%mH(phase) Rotor torque: 68g.cm^2 Braking torque: 2.6N.cm MAX. Insulation class: B(130) Dimension: 42.3 x 42.3 x 40mm Plumbum: AWG26 UL1007 With 4pin cable 2. Cooling fan: Dimensions: 40 x 40 x 15 mm (3Pin) Voltage: 12V DC Current: 0.11A Small size full of energy to make your printer pretty cool. 3. J-head nozzle: 12V thermocouple Thermistor: 100K 1% high-precision NTC thermistor Suitable for 1.75mm, 3mm filament ABS / PLA (not included) Nozzle: 0.3mm, 0.35mm, 0.4mm, 0.5mm Package included: 1 x Assembled J-Head V2.0 GT9 Extruder Head Kit

8-Channel High-Power Headphones Mixing and Distribution Amplifier POWERPLAY HA8000 V2 An articulate headphone mix can make all the difference in the outcome of a recording session. The 8-channel POWERPLAY PRO-8 HA8000 features superior performance, routing and mixing functions to accommodate even the most discerning set of ears. Two independent stereo Main Inputs, along with a dedicated Direct Input on each channel allows individual performers to obtain a more customized monitoring mix. When optimized mixes have to reach multiple listeners, each with their own specific requirements, the HA8000 delivers high-quality headphone mixing in a class all its own!

STM32F4DISCOVERY STM32F407G-DISC1 STM32F407 Cortex-M4 Development Board With ST-LINK/V2-B Description: The STM32F4DISCOVERY development board is designed based on STM32F407VGT6. Integrating ST-LINK/V2 simulation downloader (but only provide external SWD interface), which let you out of trouble with another purchase of downloader or emulator. It includes two ST MEMS, digital accelerometer and digital microphone, one audio DAC with integrated class D speaker driver, LEDs and push buttons and an USB OTG micro-AB connector. Emulator upgrade to ST-LINK / V2-B Supports virtual serial ports, supports MBED download Support U disk download Feature: STM32F407VGT6 microcontroller:     32-bit ARM Cortex-M4F core     Flash: 1024KB     RAM: 192KB     Encapsulation: LQFP100 Board power supply: Through USB bus External 5V supply voltage External application power supply: 3V and 5V Sensors: LIS302DL or LIS3DSH (ST MEMS 3-axis accelerometer) MP45DT02 (ST MEMS audio sensor, omni-directional digital microphone) Audio driver: CS43L22 (audio DAC with integrated class D speaker driver) Eight LEDs: LD1 (red/green): USB communication LD2 (red): 3.3 V power on LD3 (orange): user LED LD4 (green): user LED LD5 (red): user LED LD6 (blue): user LED LD7 (green): USB OTG LED (VBus) LD8 (red): USB OTG LED (over-current) Push buttons: User Reset USB OTG FS: Micro-AB connector Others: On-board ST-LINK/V2 with selection mode switch to use the kit as a standalone ST-LINK/V2 (with SWD connector for programming and debugging) Extension header for all LQFP100 I/O for quick connection to prototyping board and easy probing Package included: 1 x STM32F4DISCOVERY STM32F407 Cortex-M4 Development Board

PreSonus BLUETUBE DP 2-Channel Microphone Preamp PreSonus' popular Class A XMAX preamps are widely lauded for their clarity and transparency. Our tube preamps are beloved for their warm, smooth sound. With the Blue Tube DP V2 dual-path mic/instrument preamp, you get both types of high-quality sound in one unit. No wonder the original BlueTube DP became a classic! Now we've improved on the classic unit with the BlueTube DP V2. The solid-state path now feeds PreSonus top-of-the-line Class A XMAX mic preamplifier with 80 dB of variable gain - an upgrade from the original BlueTube DP's solid-state stage.

BT06 Bluetooth module:   BT06 Bluetooth module is designed for intelligent wireless data transmission, and follow the V2.1 Bluetooth specification. This module supports the UART interface, and supports the SPP Bluetooth serial port protocol, which has the advantages of low cost, small size, low power consumption and high sensitivity   Characteristic:   Bluetooth V2.1+EDR Bluetooth Class 2 Built in PCB radio frequency antenna Support UART interface 3.3V power   Application field:   This module is mainly used in the field of short distance wireless data transmission. It can be connected to the Bluetooth device of PC and the data exchange between the two modules. Avoid cumbersome cable connection, can directly replace the serial line. The Bluetooth wireless data transmission; The industrial remote control and telemetry; The POS system, wireless keyboard and mouse; The traffic, underground positioning, alarm; The automatic data acquisition system; The wireless data transmission system; bank; The wireless data acquisition; The building automation, security equipment, wireless monitoring, access control system; The intelligent Home Furnishing, industrial control; The auto test equipment; Interactive television program voting equipment; The government energy-saving lamp device The wireless LED display system The Bluetooth joysticks, gamepads The Bluetooth printer The Bluetooth remote control toy The automobile diagnostic instrument OBDII Package included: 5 x  Bluetooth Serial Port Wireless Data Module

PERFECT COMPATIBILITY：universal Bluetooth 2.1 wireless technology,Compatible with 99% auto, and most of devices, such as IPAD Air, IPHONE, IPOD, HTC, Samsung Galaxy, Blackberry, Sony, MP3 Player and other Mobile Phone, etc. NEW DESIGN, LCD DISPLAY, USB CHARGER: you car use this product anywhere,no only in the car but also is at home. CAR CHARGER 2.1A INCLUDED: with 2 USB charging ports to charge additional devices at the same time. HAND FREE CALL,FM,MUSIC PLAY: under connect situation, this product support Bluetooth hands-free call, and music. EASY TO USE: multi-function,answer, previous, and next buttons,easy to your use Brief Introduction:  This product is built-in high performance Bluetooth module and FM Wireless audio link chipset. It makes you enjoy the Wireless Stream-music Playing or Hands-free Call, wherever in the car or at home.  Bluetooth Version: V2.1+EDR,Class 2  Operation frequency: 2.402GHz-2.480GHz  Bluetooth profile: A2DP, AVRCP, HFP  FM Transmit Frequency: 87.5~108 MHz  FM Mode:Stereo Digital PLL Frequency Locking  Bluetooth Transmission Range: less than 10m  Microphone Effective Range: 0.5~2m  Power Supply: DC 5V  Working temperature: 0~50'C General Material ABS Quantity 1 piece Specification Bluetooth Version Bluetooth V2.1 Operating Range 10m Dimensions & Weight Dimensions 66.93 in x 2.17 in x 0.51 in (170 cm x 5.5 cm x 1.3 cm) Weight 1.23 oz (35 g) Packing List 1 x Bluetooth Car Kit 1 x USB Car Charger 1 x Mounting Plate 1 x User guide

DBX Compressor After producing the world's most renown series of compressors, the task of producing a new compressor worthy of our reputation would be daunting for most engineers. Not for dbx. Our engineers know audio like no one else in the world. Now the fruits of their talents are available to you in the form of the Stereo Compressor/Limiter/Gate. Want to instantly add that classic dbx response to your mix? It's there at the touch of the "Auto" button. Or use the independent Attack and Release controls to tailor the to your specific needs. Unwanted frequencies or mic bleed in the signal path? Frequency dependent gain control is a snap to set up and execute with our Side Chain External button (SC Ext). Use the Side Chain Monitor button (SC Mon) and your favorite EQ to dial in the specific frequencies you want to trigger the device. As has become our standard, the contour switch allows entire mixes to be easily smoothed with soft compression while keeping low frequencies from punching holes in the overall mix. Selectable input and output metering allow you to make sure that everything is matched up level-wise, maximizing your signal-to-noise ratio. For overall speaker protection, our new PeakStopPlus does all previous circuits one better. With a new design, the PeakStopPlus represses those unwanted transients from blowing your drivers while minimizing the distortion common to many other "hard" limiters. Selectable Hard-Knee or OverEasy characteristics make the ideal for your gain control needs, whether you're looking for "heavy" almost-special-effects compression or soft, smooth gain leveling. New lightpipe technology replaces standard LED's found on most other units, making the both very easy to read and much easier to operate. In the studio, broadcast facility or on the road with a P.A. system, the is designed for perfectly simple operation. The allows you to eliminate unwanted signals, flexibly control overall signal gain and guard your overall mix in dual mono or stereo operation. At the heart of the is our new dbx V2 VCA. Developed especially for the and other 10 series products to come, this revolutionary VCA boasts superb dynamic range characteristics while maintaining very low distortion and almost immeasurable noise characteristics. The bottom line is this: a new VCA working in conjunction with world class design makes the dbx perform better than compressors selling for hundreds more. State-of-the art-technology VCA's, meticulous component selection, and scrupulous testing procedures are just a few more reasons that the new dbx is the latest in a long line of pedigreed dbx signal processors.

Bluetooth Music Receiver is designed specially for iPod/iPhone Sound Dock, just by connecting it via the 30 pin slot. For any iPod/iPhone users that like to use their sound dock but without having to leave their phone connecting therefore restricting it’s usability with approve of this gadget from Electromann SA. Plug this music receiver into the 30 pin connection on the sound dock and then pair via Bluetooth to play your music via the sound dock. The advantage of this is that you can play your music without the use of wires but still able to use your phone, so you can lie back on your bed and play games while still listening to your music via the idock. At a Glance... Bluetooth Music Receiver for iPod/iPhone Dock Uses Bluetooth Version 2.1 Plug and Play Device Manufacturer Specifications General Bluetooth Version: Bluetooth V2.1, Class 2 Bluetooth Profile: A2DP + AVRCP Frequency Range: 2.4GHz to 2.4835GHz Effect Range: 10 Meters Plug + Play Ports Apple 30 Pin Dimensions Main product dimensions: 43x39x10mm (L x W x D) Main product weight: 8g Product Notes "Apple", "iPhone" and "iPod" are trademarks of Apple Inc., registered in the U.S. and other countries. This is not claimed to be an authorized or branded product by Apple Inc. The product and our company are not affiliated with Apple Inc. or endorsed by them in any way. Package Contents Wireless Receiver

Bluetooth Smilies Mini Speakers 5 different facial expresions Choose from: A, B, C, D or E Version v2.1 + EDR class 2 Supports HSP1.1, HFP1.5 A2Dp1.2 & AVRCP1.0 Profiles Effective distance: 10m Speaker unit: 1.5" output power: 3W x 2 (RMS) THD =10% Frequency range: 150Hz~20KHz Signal to noise ratio: ≥65dB Distortion: 1% Working current: Max 350mA Audio input: card / U disk / 3.5mm standard oudio (AES /EBU input) Supports micro SD card / U disk, support capacity up to 16G High sensitivity microphone (MIC), Professional DSP echo cancelation Operations / function keys: Mode, play / pause, volume up / volume down, Battery capacity: Lithium-ion battery 3.7V 800Ah Note: if pairing to your bluetooth device prompts for a password please use "0000" Product Dimensions: H=48mm, ø = 102 Package dimensions: 105x105x62 mm

Bluetooth Smilies Mini Speakers Version v2.1 + EDR class 2 SUpports HSP1.1, HFP1.5 A2Dp1.2 & AVRCP1.0 Profiles Effective distance: 10m Speaker unit: 1.5" output power: 3W x 2 (RMS) THD =10% Frequency range: 150Hz~20KHz Signal to noise ratio: ≥65dB Distortion: 1% Working current: Max 350mA Audio input: card / U disk / 3.5mm standard oudio (AES /EBU input) SUpports micro SD card / U disk, support capacity up to 16G High sensitivity microphone (MIC), Professional DSP echo cancelation Operations / function keys: Mode, play / pause, volume up / volume down, Battery capacity: Lithium-ion battery 3.7V 800Ah Note: if pairing to your bluetooth device prompts for a password please use "0000" Product Dimenssions: H=48mm, ø = 102 Package dimenssions: 105x105x62 mm

BLUETOOTH MUSIC RECEIVER - FOR IPOD/IPHONE SOUND DOCK - A269 Bluetooth Music Receiver is designed specially for iPod/iPhone Sound Dock, just by connecting it via the 30 pin slot. For any iPod/iPhone users that like to use their sound dock but without having to leave their phone connecting therefore restricting it’s usability with approve of this gadget from Chinavasion. Plug this music receiver into the 30 pin connection on the sound dock and then pair via Bluetooth to play your music via the sound dock. The advantage of this is that you can play your music without the use of wires but still able to use your phone, so you can lie back on your bed and play games while still listening to your music via the idock. At a Glance... Bluetooth Music Receiver for iPod/iPhone Dock Uses Bluetooth Version 2.1 Plug and Play Device Manufacturer Specifications General Bluetooth Version: Bluetooth V2.1, Class 2 Bluetooth Profile: A2DP + AVRCP Frequency Range: 2.4GHz to 2.4835GHz Effect Range: 10 Meters Plug + Play Ports Apple 30 Pin Dimensions Main product dimensions: 43x39x10mm (L x W x D) Main product weight: 8g Product Notes "Apple", "iPhone" and "iPod" are trademarks of Apple Inc., registered in the U.S. and other countries. This is not claimed to be an authorized or branded product by Apple Inc. The product and our company are not affiliated with Apple Inc. or endorsed by them in any way. Package Contents Wireless Receiver

UNIVERSAL MINI STEREO WIRELESS BLUETOOTH HANDSFREE EARPHONE WITH EARHOOK FOR IPHONE/SAMSUNG - PA2255B This item features a mini, light-weight design, with functions of CSR noise isolation and echo cancellation, 10m transmission distance without obstacles, one button with multifunctions etc, which is compatible with all bluetooth enabled devices. It is also with more features like powerful rechargeable battery, two devices connecting simultaneously, convenient earhook and so on. More detailed product information, please refer to the English manual. Features: Super mini size and lightweight, diameter is about 22mm, weight about 4g. Easy-taking and comfortable wearing. CSR noise isolation and echo cancellation technology for perfect sound quality. 10m transmission distance without obstacles. Rechargeable, just need two hours to be charged, and enough to talk or listen to music for 4-6 hours. Simple operation, one button with multifunctions, like on/off switch, answer, end, reject, dial, redial a call. Supplied with earhook to make it hard to fall off. Support connecting two devices simultaneously. Compatible with bluetooth enabled devices like iPhone and Samsung. Specifications: Item name: Mini-a Color: Black, white optional Style: In-ear Sound type: Stereo Bluetooth version: Bluetooth V3.0+EDR, compatible with V2.1, V1.1 version Communication: Wireless Transmission distance: Approx. 10m / 32.8ft Wireless frequency: 2.4GHZ Chipset: CSR6145 Transmission power: Class 2 Type of built-in battery: 50mah Li-po battery Charging source: DC 5V supply (Computer USB port, mobile phone charger, car charger) Compatible device: Compatible with Android, iphone, Windows, Symbian systems and other bluetooth enabled devices Charge time: Approx. 2 hours Standby time: up to 12 hours Listening to music time: Approx. 4 hours Lasting talking time: Approx. 6 hours Earphone diameter: Approx. 2.2cm / 0.87in USB cable length: Approx. 50cm / 1.64ft Earphone weight: Approx. 4g / 0.14oz Package size: Approx. 9.6 * 7.1 * 2cm / 3.78 * 2.80 * 0.79in Package weight: Approx. 25g / 0.88oz How to use it: 1. Press and hold on/off button until red LED and blue LED alternately flashing. This headset is now ready to be paired. 2. Set your phone to search for the Bluetooth device. 3. Select this headset from the result list, named Mini-a. 4. Enter pin code 0000. 5. If the pairing is not succeeded, please repeat the steps above. 6. Blue LED flashes when the pairing is completed. Package List: 1 * Mini-a bluetooth earphone 1 * USB cable 1 * Ear hook 1 * English manual

Do you want to have a portable and lovely MP3 player to listen you like music? Do you need a mini player to make your music perfect? Come on! Today we will introduce this New Sports Bluetooth MP3 Player to you. The beautiful exterior design is suitable for all people. With a clip is comfortable to carry. This is also a great gift for yourself and your friends. Wireless appreciate the play stereo music phone The wireless set aside to answer phone calls Wireless stereo music playback to listen to the computer Use of the network for remote wireless two-way conversation Wireless listen to stereo music, set aside to answer the call automatically converted High-fidelity, CD quality sound effects. Remote control music playback status High sensitivity, omni-directional microphone design, clear voice, no echo Bluetooth Version 1.2 / V2.1, wireless transmitter standard of class II Frequency Coverage 2.402~2.480GHz ISM band Sensitivity -80dbm Transmit Range up to 10m Transmit Speed 57~723Kbps Stereo Compression Ratio 44.1 / 48kHz Channel 79 channels of 1MHz, B/W Contact Terms Point-to-Point Battery Li-ion Charge Power PC USB, 5V Charging Time 1-2 hours Charge Power PC USB, 5V Dimensions 14 x 13 x 4.7 cm / 5.51" x 5.12" x 1.85" (L x W x H) Weight 87 g / 3.07 oz Color Blue 1 x New Sports Bluetooth MP3 Player 1 x USB Cable(74cm) 1 x User Manual

After producing the world's most renown series of compressors, the task of producing a new compressor worthy of our reputation would be daunting for most engineers. Not for dbx. Our engineers know audio like no one else in the world. Now the fruits of their talents are available to you in the form of the 1066 Stereo Compressor/Limiter/Gate. Want to instantly add that classic dbx response to your mix? It's there at the touch of the 'Auto' button. Or use the independent Attack and Release controls to tailor the 1066 to your specific needs. Unwanted frequencies or mic bleed in the signal path? Frequency dependent gain control is a snap to set up and execute with our Side Chain External button (SC Ext). Use the Side Chain Monitor button (SC Mon) and your favorite EQ to dial in the specific frequencies you want to trigger the device. As has become our standard, the contour switch allows entire mixes to be easily smoothed with soft compression while keeping low frequencies from punching holes in the overall mix. Selectable input and output metering allow you to make sure that everything is matched up level-wise, maximizing your signal-to-noise ratio. For overall speaker protection, our new PeakStopPlus does all previous circuits one better. With a new design, the PeakStopPlus represses those unwanted transients from blowing your drivers while minimizing the distortion common to many other 'hard' limiters. Selectable Hard-Knee or OverEasy characteristics make the 1066 ideal for your gain control needs, whether you're looking for 'heavy' almost-special-effects compression or soft, smooth gain leveling. New lightpipe technology replaces standard LED's found on most other units, making the 1066 both very easy to read and much easier to operate. In the studio, broadcast facility or on the road with a P.A. system, the 1066 is designed for perfectly simple operation. The 1066 allows you to eliminate unwanted signals, flexibly control overall signal gain and guard your overall mix in dual mono or stereo operation. At the heart of the 1066 is our new dbx V2 VCA. Developed especially for the 1066, 1046 and other 10 series products to come, this revolutionary VCA boasts superb dynamic range characteristics while maintaining very low distortion and almost immeasurable noise characteristics. The bottom line is this: a new VCA working in conjunction with world class design makes the dbx 1066 perform better than compressors selling for hundreds more. State-of-the-technology VCA's, meticulous component selection, and scrupulous testing procedures are just a few more reasons that the new dbx 1066 is the latest in a long line of pedigreed dbx signal processors.

    Audio Features Optimal HD Audio Yealink Noise Proof Technology 20-foot (6-meter) microphone pickup range Apply to medium to large conference room Built-in 3-microphone array, 360-degree voice pickup 56mm diameter and 10w speaker Full-duplex speakerphone with AEC Echo cancellation tail length is up to 320ms Background noise suppression Codecs: G722, G722.1C, G726, G729, G723, iLBC, Opus DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO VAD, CNG, PLC, AJB, AGC   Phone Features 1 VoIP Account Call hold, mute, DND, call recording, hotline 5-way conference call Redial, call waiting, emergency call Call forward, call transfer, call return, dial plan Ring tone selection/import/delete Set date time manually or automatically Volume adjustment Pairing via Bluetooth/USB Micro-B port External speaker connection via 3.5mm audio-out port Create meeting directly Join meeting seamlessly Active    Directory Local phonebook up to 1000 entries XML/LDAP remote phonebook Intelligent search method Phonebook search/import/export Call history: dialed/received/missed/forwarded Black list   IP-PBX Features Intercom Multicast paging Anonymous call Anonymous call rejection Voice mail Distinctive ringtone Call pickup   Display 5” 720x1280 capacitive touch screen Volume key Home button   Interface 1 x RJ45 10/100M Ethernet Port Built-in Wi-Fi (2.4GHz/5GHz, 802.11.b/g/n/ac) Built-in Bluetooth 4.0 Power over Ethernet (IEEE 802.3af), class 4 2 x Wired MIC Port (for optional wired (CPE90) expansion microphones) 2 x USB 2.0 Port 1 x 3.5mm audio-out Port 1 x USB 2.0 Micro-B device Port 1 x Security Slot   Network and Security SIP v1 (RFC2543), v2 (RFC3261) SIP server redundancy supported IPv4/IPv6 NAT traversal: STUN mode Proxy mode and peer-to-peer SIP link mode IP assignment: static/DHCP HTTP/HTTPS web server Time and date synchronization using SNTP UDP/TCP/DNS-SRV (RFC 3263) QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS, DSCP SRTP for voice encryption Transport Layer Security (TLS) HTTPS certificate manager AES encryption for configuration file Digest authentication using MD5/MD5-sess OpenVPN, IEEE802.1X   Management Configuration: browser/phone/auto-provision Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy Auto-provision with PnP Zero-sp-touch, TR-069, SNMP Reset to factory, reboot Package tracing export, system log   Other Physical Features External Yealink PoE adapter (optional) Power consumption (PoE): 5.25w-12.3w Dimension (W*D*H): 338mm*338mm*74mm Operating humidity: 10~90% Storage temperature: -10~40°C (+14~104°F)   Package Features Package content: - Yealink Android IP Conference Phone (CP960) - Ethernet Cable (7.5m CAT5E UTP cable) - Wireless Microphone CPW90 (Optional) - Wired Microphone CPE90 (Optional) - Quick Start Guide - Yealink PoE Adapter YLPOE30 (Optional) Qty/CTN: 4 PCS N.W/CTN: 5.6 kg (CP960) 10.4 kg (CP960-WirelessMic) G.W/CTN: 8.4 kg (CP960) 11.6 kg (CP960-WirelessMic) Giftbox size: 405mm*392mm*141mm Carton Meas: 589mm*401mm*421mm  

AT-BT809 Foldable Wireless Bluetooth Stereo Headphone Headset Mic FM TF Slot Description: This headphone is foldable and easy to carry. Wireless headphone with remarkable sound, with FM function, can listen to the FM radio. Allow you to answer or reject phone calls anytime and anywhere. It is a good choice for listening music, watching movie, chatting online, etc. Feature: Powered by the lithium battery (can be charged via USB). Bluetooth + stereo headset combo + MP3 player + FM radio. Up to 10 hours playing time, talking time up to 6 hours, and standby time 250 hours. Good quality and fashionable appearance; adjustable length hinges and very comfortable to wear. Supplied with a 3.5mm cable that you can use to connect the headphone to devices without Bluetooth. Wireless headphone connects to iPhone, Samsung Galaxy's, iPad PC HTC's or any other device that has Bluetooth capability. Specification: Brand AT-BT809 Bluetooth Version V2.1 + EDR Output Power Class II Operation Distance 10m Plug Type 3.5mm stereo Bluetooth Protocol HSP/ HFP/A2DP/AVRCP Use For iPhone, Samsung Galaxy, iPad PC HTC or any other device that has Bluetooth capability. Frequency Response Range 20-20KHz Buit in wireless headphone,microphone Color Red/Gold/ Black&White/Sky blue Impedance 32Ω Sensitivity 15dB Distortion Rate 0.05% Speaker Diameter 40Φmm Charging Time Approx.2.5hours Plug Type Bluetooth Audio Cable Length Approx. 1.1m / 3.61FT lnput plug Diameter wireless Wearing Way Head wearing type Output Audio Source Portable audio-visual Net weight 195g / 6.9oz Earmuff Diameter 8cm / 3.1inch Package weight 351g / 12.4oz Package included: 1 x AT-BT809 Foldable Wireless Bluetooth Stereo Headset 1 x USB Cable 1 x Audio Cable 1 x User Manual Detail pictures: