SyntherJack has been in touch to tell us that, based on his synth meets and home DIY experience he has designed a simple, portable audio mixer - 4sum. He believes that it is a great companion for mini synths, like Monotrons and Volcas and also makes an excellent first audio-related DIY project.
Here's the mixer being use in a Monotron Duo/Delay jam...
Pricing and Availability:
Mixer can be bought via from patch.audio online synthesizer shop as a full kit.
Highly configurable Eurorack module