Audio-Technica AT-MX351 SmartMixer Five-Channel Automatic Mixer
The AT-MX351 Automatic 5-channel Smartmixer is ideal for meetings, seminars, teleconferencing, worship services, courtroom proceedings, radio and TV broadcasting and A/V applications. All switching is under microprocessor control with proprietary algorithms for instant, seamless operation. The sound mixer has an individual priority pre-select switch for each mic/line channel that allows choice of one-channel-at-a-time operation, all active, or any mix of moderator override. The last microphone on stays on so that ambient sound is never muted. Plus, any number of SmartMixers can be linked to create a system for large multi-mic installations. The priority control system extends throughout the entire chain.

Input impedance: Mic: 8,000 ohms; Line: 50,000 ohms; Aux: 50,000 ohms; Link In: 20,000 ohms Output impedance: Balanced: Line: 200 ohms; Mic: 300 ohms Unbalanced: 400 ohms; Link Out: 100 ohms; Preamp Out: 750 ohms Maximum input level: Mic: -24 dBV; Line: +27 dBV; Aux: +17 dBV Maximum output level: +22 dBm Nominal output level (0 VU): Balanced: Line: +4 dBm (600 ohms), +4.4 dBV (open circuit); Mic: -46 (600 ohms), -44 dBV (open circuit) Unbalanced: -10 dBV (open circuit) Preamp Out: -10 dBV (open circuit) Maximum monitor output: 700 mW, 20 ohm load Maximum gain: 73 dB Frequency response: 40 Hz to 22 kHz Equivalent input noise: -128 dBV (150 ohms) at maximum gain Input attenuation: 10 dB Mic/line input pads: 50 dB Maximum normal attenuation: approximately 20 dB (up to 100 microphones on simultaneously) Microphone phantom power: +48V DC Control voltage out: +4V DC Power supply: 120V/230V AC (switchable), 50/60 Hz, 10W Operating temperature: 32° to 104° F (0° to 40° C) Dimensions: 16.93" (430 mm) W x 9.38" (238 mm) D x 1.75" (44 mm) H (including feet, knobs and connectors) Weight: 6 lbs. 13 oz (3.1 kg) Accessories included: AC power cable; AT8325/1.0 Link Cable; rack mount adapters; security caps