The Maxi Protoboard is a compact PCB (155.702 mm x 100.33 mm) with solder pads for Thru-Hole components. Besides the two classic power rails, as known from breadboards, there is a third rail for e.g. ground or additional voltages - Important when using e.g. TTL/CMOS logic chips or other integrated circuits.

There is a dedicated area for attaching an optional 16-pin bus board connector. Right next to it there are taps for bus signals (CV / Gate), all three voltages common in the Eurorack sector (+12 V / -12 V / +5 V) and ground.

The outer solder points of the Maxi Protoboard are pleasantly large and are not interconnected, so that control elements such as encoders or potentiometers can be conveniently attached here.