Product description "Doepfer Musikelektronik GmbH - A-127 breakout"
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.