Audio Technica AT-MX381 Smart Mixer 8-Channel Automatic Mixer w/ an RS232 data port & Smartmixer...
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RU2-CS1 ‐ RS-232 Serial Controlled Interface - Computer control
Amazon.com: Kanex Pro Mini 3-input (1 digtal, 2 analog) Audio Amplifier with Mic Mixer, 40 Watt amplifier output at 70V or 100V, IR remote & sensor included (AP3DBL) : Electronics
Intelix MARC16L16L-E MARC Room Combine Audio Matrix Mixer with 16 Inputs and 16 Outputs, Combine
100W Audio Amplifier LR/Optical/CATx Input, Web-GUI, Mixer w/ MIC | A-NeuVideo, Inc.
Pure Resonance Audio RZMA120BT 4 Zone 120W Multi Zone Rack Mount Mixer
Digital Karaoke Sound Mixer 20KHz RS232 Audio Effector