4-Channel Micro Mixer connects mics or instruments to amplifier via four 1/4” input jacks. Each channel has its own volume with a master volume control for final mixed output. 9V battery powered.
A pocket sized...
A/B Box - connect two instruments into one amp and quickly switch between them or switch one instrument between channels on amplifier for varying preset sounds. One input/two inputs (1/4 jacks). Steel box. Great for demos.