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The Problem Solver “Turn my headphones up!” “More me, I can’t hear myself!” “Turn down that click!” It gets old. Change that tune with the HP60 headphone distribution system. The HP60 is more than just a half-dozen headphone amps, it’s a field-tested solution to a host of common headphone-monitoring problems. Let’s start with “turn my headphones up.” Each of the HP60’s six headphone amps has its own level control and puts out 150 mW, which is loud enough to drive the alligators out of the Louisiana swamps. If they can’t hear this headphone system, they’re stone deaf. More likely they’ll scream, “turn it down, you’re killing me!” Problem solved. Now let’s solve “turn down that click.” The HP60 features two sets of line-level, stereo inputs that are routed to all six headphones; a Mix control that sets their relative levels for each headphone output. So you can feed the main control-room mix to channel A and the click to channel B and use the Mix controls to individually raise or lower the click relative to the main mix for each musician. Problem solved. As for “more me,” in addition to the two pairs of main stereo inputs, you get an external stereo input pair with level control for each headphone channel. A Mono switch lets you sum the left and right inputs. Additionally, a mute switch is provided for each headphone output. So you can send each person a feed of just their instrument or voice and can control the level separately for each. Problem solved. Take Command With the HP60, when you talk, everyone listens. Hit the Talk button and use the talkback-mic input and your favorite dynamic mic to tell ‘em what to do. You can even use a footswitch to control the talkback hands-free. Each channel also has stereo line outputs that can send a copy of the line-level headphone-channel mix to additional headphone amplifiers or monitor systems. So if you have a large band and need more than six headphones, you can chain two or more HP60s. So get the problem solver, the most flexible and advanced headphone-mixing system in its price class: the PreSonus HP60.Input/Output 6 screaming-loud (150 mW/channel) headphone outputs (front panel) 6 unbalanced stereo ¼” line outputs (1 per channel); carries a copy of the channel mix 6 unbalanced stereo ¼” external analog line inputs (1 per channel) for “more me,” with trim controls 4 balanced ¼” analog line inputs (L/R Mix input pairs A and B) 1 balanced XLR Talkback input for external dynamic microphone 1 ¼” footswitch jack for hands-free Talkback operation Meters, Controls, and Features 2 stereo input channels (A and B) Channel controls External input level Headphone level control for each headphone output Mix A/B control (blends signals from input pairs A and B) Mono switch for external input Mute switch (mutes input pairs A and B) Master controls Input A level Input B level Talk button (momentary switch) Talkback-mic level Physical 1U 19” rack-mountable, rugged steel chassis Internal power supply with standard IEC connector

QED SS50 5-Way Transmatch Speaker Switch Safely connects up to 5 pairs of speakers to the same amplifier using high quality impedance matching transformers to ensure that the amplifier load impedance remains above the minimum value WHAT ARE THE DIFFERENCES BETWEEN THE SPEAKER SWITCHES IN TERMS OF IMPEDANCE? All the speaker switches are configured so that if you use 8 speakers the minimum impedance seen by the amplifier will be 4 WHAT ARE THE BENEFITS OF SERIES VS PARALLEL ? The switches which have more than two sets of speakers use a combination of series and parallel switching to achieve the minimum impedance of 4 no matter what combination of speakers are switched on. For the two way switches there is a choice between exclusively series or parallel versions. If you have 8 speakers (and a 4 min amp) you should always use the parallel switch. If you have 4 speakers and a 4 min amp you should always use the series switch. ALL QED SWITCHES LOAD ON 4 USING 8 SPEAKERS. WHAT HAPPENS IF MY SPEAKERS ARE 6 ? 1. Check your amp if it can cope with a 3 load or less (and some can) then you are alright. The rule is you must always use speakers with double the impedance of the amp minimum. 2. If you only have two pairs of speakers then use the two way SERIES switch. HOW DO THE SWITCHES DEAL WITH POWER, E.G. IF I HAVE AN AMPLIFIER WITH MORE THAN 150 WATTS? These accessories use mains switches which are rated at 6A which means the max power they can handle is 288W given an 8 load IF MY AMP IS RATED 6-16 SHOULD I REALLY BE RUNNING A 4 LOAD? NO, NEVER you should use 12 minimum speakers. You can get 16 speakers though but it may just be easier to change the amp. CAN I USE THEM IN REVERSE E.G. AS AN AMPLIFIER SWITCHER (WE KNOW THE ANSWER IS NO, BUT WHY?) NO because the speaker switches are designed to have two sets or more of speakers attached to one amp, if used in reverse there is always the possibility of connecting two amps at once to one pair of speakers resulting in damage to one or both amps. WHAT IS THE TECHNICAL DEFINITION OF 'TRANSMATCH'? For the 5 way speaker switch we dont use parallel or series switching but use transformer coupling instead. Again you have to use 8 speakers minimum if your amp is a 4 minimum amp. The impedance is then matched by the transformer (hence the name) so that a net 1.6 load (all 5 sets of 8 speakers switched on)is converted back to a 4 load. One pair of speakers (A) is not connected to the transformer but is directly connected to the amp, these will be the main speakers. The four B pairs are connected via the transformer.

Pioneer SX-20 200W Stereo Receiver Turn your radio station into an audio powerhouse. With an immense power output of 100 W per channel, the SX-20-K stereo receiver is built to provide massive sound. You can hook the stereo receiver to a Super Audio player, a network audio player, a recorder, and even to a turntable via thePhono MM terminal. Completely power-driven, the SX-20-K includes large A/B speaker terminals to support two pairs of speakers. Each pair can be set up separately (A / B) or simultaneously (A + B). Bi-wiring is also supported for the optimum clarity in sound quality. Specifications Main Features Output Power per Channel 100 W + 100 W Impedance at Output Level 4-16 (A / B) 8-16 (A + B) 4-16 (Bi-Wire) Number of Channels 2 Input Connections SACD/CD Network Recorder PHONO (MM) Output Connections Recorder On-Screen Display (GUI) FL Display Input & Output connections Headphone Yes Large speaker terminals Yes Phono Input Yes Pre-amp Output Yes (2.1 ch) Speaker A/B Yes Audio Features AM/FM Tuner with RDS Yes Tuner Pre-set Stations 30 pre-sets Power Output Power output per channel 100 W + 100 W Condition 20 Hz-20 kHz, THD 1 %, 8 Rated Power Output THD: 0.02 %, -3 dB, 8, 1 kHz Frequency Response: LINE Phono: 20 Hz-20 kHz, 0.5 dB (RIAA Eqalisation) MM, Line (SACD/CD, Network, Recorder): 5 Hz-100 kHz, 0 dB/-3 dB Signal-to-Noise Ratio: LINE (DIN) Line (SACD/CD, Network, Recorder): 100 dB Phono (MM): 80 dB dB Power Requirements 220-230 V, 50/60 Hz Power Consumption (in use / standby) 210 W / 0.3 W Auto Power Down   Yes Construction Design Aluminium Front Panel Amplifier Specifications Dimensions (W x H x D) 435 x 142.5 x 364 mm Weight 8.3 kg

The Blackmagic Design Audio Monitor provides 2-channel audio monitoring of AES/EBU digital audio, audio embedded in SDI and analog audio. Designed to provide you with peace of mind, the unit provides high-quality audio monitoring of signals from decks, video servers, and live transmissions. You can use the unit to check audio levels as you work on your project. Up front and big on the unit's front panel are two 27-segment LED VU meters that provide you with a bright, visual representation of the audio levels from -45 to +3 decibels, and two built-in, full-range stereo speakers provide clear audio. Control of the unit is by a front panel illuminated keypad that allows you to select input sources to monitor. A 2.1" LCD screen for viewing input video (up to 4K), and a headphone jack and headphone volume control for when the listening environment is too intrusive Supporting video resolutions up to Ultra HD, the audio monitor allows you to monitor the embedded audio as separate stereo pairs, before passing the signal out through either the SDI loop through port with 16-channel embedded audio or the HDMI 4K connector with embedded 2-channel audio. The rugged aluminum case features a card slot for an available Dolby Decoder card, allowing you an easy upgrade path. The 1RU-sized unit comes with a class A/B amplifier for a balance between high fidelity and power efficiency, dual subwoofer design with extra wide range speakers allow you to sit back and hear the audio. Rackmount ears are built-in for use in a post facility or mounting in a production case. Audio Inputs The Blackmagic Design Audio Monitor supports audio from a variety of sources, AES/EBU digital audio, balanced and unbalanced analog audio, as well as audio embedded in the SDI stream. You can monitor 2 channels of audio at a time, and even select stereo pairs from the 16 channels in the SDI signal. Audio Output SDI loop through supports 16-channel embedded audio, and the unit outputs 2 channels of embedded audio in the HDMI output stream. Front Panel Control and Features The 2-channel audio meters are selectable between VU and PPM, and show a range of -45 to +3 dB in 27 steps. The audio level meter brightness is adjustable so the meters are easy to read in either bright or dark environments. An illuminated keypad on the front panel, allows you to select audio inputs, isolate left and right audio channels, mute, and select audio channels to monitor from within the SDI stream. Speakers Two full-range speakers and two subwoofers combine to provide audio that is rich in low frequency and provides sharpness in mid and high ranges. Video Support When you are working with SDI video input you can use the Blackmagic Audio Monitor to convert from SDI to HDMI for monitoring with big screen televisions or video projectors. The unit automatically switches between SD, HD, and even Ultra HD 4K. You can monitor in high resolution Ultra HD 4K using the HDMI 4K output with only a single HDMI cable or you can connect a regular HDTV and use the unit's built-in Ultra HD 4K to HD down conversion. You can also monitor video on the built-in 2.1" LCD panel, which displays video format, audio type, audio channels and volume level. Dolby The Audio Monitor features an internal dedicated Dolby slot so you can add an available Dolby decoder module. The Dolby decoder supports Dolby Digital and AC-3 decoding for 5.1 surround sound monitoring from either the 6G-SDI video input or the AES/EBU audio input Rackmount Design The 1RU height of the Audio Monitor makes it ideal for use in either a post production rack system, location production case, or control or mixing room. The built-in rack mount ears make for hassle free mounting into available standard rack systems. The Audio Monitor features an internal power supply, and runs off of V AC at Hz

Description Intellinet Tone Generator And Probe Kit Retail Box 2 year Limited Warranty Features Tests datacom, telecom, security, video, and audio networks Two position switch for single or multi-tone signal LEDs for line polarity, continuity and voltage Enhanced talk battery mode provides power for voice communications over inactive pairs Testing leads and modular cables for individual wire tests or modular jack tests Replaceable plastic tip to prevent accidental shorts Trace or identify wire or cables in a bundle or group Alligator clips, RJ45 jack, RJ12 plug, optional F-connector Specifications Net Toner Toner Frequency: High alternating 500-781 Hz; Low alternating 446-657 Hz Talk Battery: 9V into a 600 ohms circuit Voltage protection: 50 VDC or 24 VAC Battery: 9V DC standard or alkaline CE Approved: EN 55022 Class B for ITE and EN 55024 Size: 125 (L) x 68 (W) x 26 (H) mm (4.9 x 2.7 x 1.2 in.) Weight: 120g (.37 lb) Net Probe Gain: 30 db Tip resistance: 30 ohms (Plastic tip) Battery: 9V DC standard or alkaline CE Approved: EN 55022 Class B for ITE and EN 55024 Size: 210 (L) x 40 (W) x 28 (H) mm (8.1 x 1.6 x 1 in.) Weight: 140g (.30 lb) Environmental: Operating temperature: 0 — 40°C (32 — 104°F) Package Contents Net Probe Net Toner w/ Alligator clips and RJ-12 connector Female F-connector to RJ-45 adapter Carrying pouch User Manual

SM Pro Audio MPATCH2 Monitor Controller The M-Patch 2 is a compact desktop/rack-mountable sized passive volume attenuator and patch control device. Building on the success of the original M-Patch, the new M-Patch 2 is a feature packed passive problem solver for nearly all production environments. A great way to passively attenuate stereo signals from soundcards, CD players, pre-amps, and mixers, the M-Patch 2 front panel rotary controls allow precise level adjustments for two input sources. Featuring balanced combo XLR/TRS input jacks and XLR outputs, RCA & 3.5mm jack inputs, mono/stereo summing switch, Mute switch, A/B output pairs, and a built in stereo headphone amplifier, the M-Patch 2 has all bases covered. No more bit loss! One of the benefits of passive volume attenuation is that you no longer have to control volumes with your software master volume fader. Reducing audio levels from software only reduces your bit depth. It is much more appropriate to keep your software masters at unity and passively attenuate the audio to your active monitors. No active circuitry, buffers, transistors, batteries, or power supply of any kind can interfere with the main passive output of the M-Patch 2. It simply delivers attenuated signal. That's it.. pure, simple transparent. The M-Patch 2 is a true problem solver. It will work seamlessly within your system, is very transparent and silent. You will now be able to keep your bit levels up in your system, eliminate using your mixer, and keep all volumes at an acceptable level. This is a very handy tool for a wide variety of applications. You can use M-Patch 2 anywhere you want to trim the amount of gain; ie, reduce the volume of analog audio signals. For example, you could use one to trim the output of a microphone pre-amplifier. With its high-quality potentiometer, the M-Patch 2 passes signal more accurately, and sounds better than most built-in volume controls. Another use might be to trim the levels of a 5.1 or greater multi-channel monitor system -- either one pair of channels, or two, or all of them. You can also use a M-Patch 2 to trim the output level of a Digital to Analog Converter like those found in high end pre-amplifiers. Or as a local volume control for distributed audio systems. The possibilities are endless.

Russound SDB6.1 6Zone Matching Volume Control 6 Pair Speaker Selector SDB-6.1 The SDB-6.1 is a highly efficient dual-source speaker selector that controls up to six pairs of speakers. The front panel provides a separate volume control for each speaker pair, allowing you to adjust the volume in each room from one convenient location. With two amplifier inputs, the SDB-6.1 allows you to choose either program in each room. Each zone also has an on/off switch, which allows you to keep the volume control at a set level while turning the speakers on or off. The SDB-6.1 uses high-quality impedance-matching autoformers to maintain a safe operating load at the amplifier while distributing maximum power throughout your system. Designed for use with either 4- or 8-ohm speakers, the SDB-6.1 is equipped with internal jumpers to select the degree of impedance matching based on the impedance of your speakers and your amplifier's impedance requirements. Standard Features Lets you select music and control volume in six rooms from a central location Dual amplifier inputs allow a choice of program in each room Printed room labels included Detachable snap connectors are color coded for easy wire termination Selectable impedance matching accommodates 4- or 8-ohm speakers High-quality autoformers provide trouble-free performance for years Specification: Shipping Dimensions 12.0" (W) x 7.0" (H) x 20.5" (D) (30.5 x 17.8 x 52.1 cm) Shipping Weight 10.8 lbs (4.9 kg) Connector(s) Detachable 4-pole color-coded snap connectors Impedance Matching Type Autoformer Max Wire Size 14 AWG (1.9 mm) Power Handling 150 watts RMS continuous per channel Speaker Impedance Min: 4 ohms Volume Control 12 steps; total attenuation 42 dB Zone Audio Controls Volume knob, on/off, Amplifier A/B switch

Pioneer Media Receiver MVH-S215BT The MVH-S215BT lets you enjoy hands-free calling and audio streaming in the car, courtesy of built-in Bluetooth® with internal mic. Other entertainment options include a front USB input, Aux-In and AM/FM radio. Receive pristine sound from the MVH-S215BT’s built-in amplifiers with 4 x 50W of pure MOSFET power. For even more power, you can use the RCA pre-out to hook up an amplifier to provide additional power for speakers or subwoofers. Note: Front USB input is not compatible with iPod/iPhone devices. Alternatively, iPhones can connect to the MVH-S215BT via Bluetooth. BLUETOOTH HANDS-FREE CALLING b'&' MUSIC STREAMING Stay safe and obey local hands-free laws with built-in Bluetooth (HFP) and internal mic. Easily pair a Bluetooth enabled phones without having to go through complicated settings. When a registered Bluetooth device is in close proximity to the receiver, the auto connection function automatically pairs the two units. From hands-free calling, wireless audio streaming (A2DP) with artist, album, and song search, simple pairing, and control audio (AVRCP), Bluetooth® wireless technology has made life in the vehicle much more convenient. ANDROID MUSIC SUPPORT Take advantage of a wired USB connection to the receiver. Sound stays clean and clear, and song, artist, time and album details are user-friendly. *We recommend confirming your Android™ smartphone compatibility with our Support team or your local authorised retailer, prior to making a purchase. FRONT USB USB Input – connect an Android smartphone or a USB device, directly to the front USB input and enjoy clean, clear sound. *not compatible with iPhone/iPod