The breakout module expands each of the A-127's filters by an audio input with adjustable level and also by individual outputs for low pass, high pass, band pass and the peviously not implemented notch.
In combination with the individual outputs of the a-127 you can use each filter totally idividually. For parallel filter connection the existing mixer of the main module may be used or an external mixer. For serial connection the filters are patched in the desired sequence at the breakout module. A jumper is used to define the filter type for each sub-unit for the mix unit of the main module.
The breakout module can be used without modification only in combination with the new version of the A-127 (pcb printing "Version 4"). Only the new version has the expansion connector available, that is required to connect the breakout module. It's also possible to combine the breakout module with older versions of the A-127 (versions 1, 2 and 3) but in this case soldering is required to connect the breakout module to the main module (soldering 4 wires to each filter unit). See the instructions how to connect to A-127.
The front panel printing of the first production series is faulty. The highpass and bandpass are mixed up. If you cannot accept this drawback we ask you to wait for the second production series (about early in 2015).
per filter: audio input, outputs for lowpass, highpass, bandpass and notch
3U Eurorack module, 8HP wide