Doepfer’s A-138d module is ideal for crossfading between two signals, or for inserting external effects pedals and other stompbox-style devices into a Eurorack modular system.
Crossfader for two different A-100 signals
Crossfade between original and processed audio signal (dry/wet control). For this the incoming audio signal is patched to input 1 of the A-138d and passed on to the audio input of the sound processing module in question (e.g. filter, phaser, flanger, frequency shifter, wave multiplier, wave shaper ...). The audio output of the sound processing module is patched to input 2 of the A-138d.
Integrates external effect units into A-100 with dry/wet control for the external effect