Portable 5-Channel Audio Mixer (black version)
Features
5 channel monophonic mixer
up to +20dB (10x) gain knob for each channel
dedicated mute button switch per channel (not click less)
dual mono output for driving headphones
powered by 4x AA battery or external adaptor 9-12VDC
Available as an assembled Pedal and as a DIY project.
This Pedal is currently available.