HM-400 4-Channel Headphone Amplifier
L/R Main stereo inputs plus L/R stereo outputs.
7-segment LED metering per channel plus Main.
3 headphone outputs per channel.
Aux input on each channel with balance control to mix main and aux signal.
Mute and stereo/2-ch mode switches per channel.
12 total headphone outputs.
Built-Like-A-Tank construction.
