Doepfer A-101-6 6stage Opto Fet Filter hp Input Header (2x4) for connecting

Input Header (2x4) for connecting the output of a QCD or QPLFO to the SISM's inputs

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Selectable sweet analog chorus and vibrato with depth control

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Comprehensive Soundcraft® GB series audio routing with Auxes (flexible pre/post switching) and subgroups with switching and dedicated outputs

Doepfer A-101-6 6stage Opto Fet Filter hp Input Header (2x4) for connectingA 101 6 is a new filter module that uses so called opto FETs to control the filter frequency. Opto FETs are very similar to Vactrols but use light depending field effect transistors (FETs) instead of light depending resistors (LDRs). A opto FET is a combination of a light depending FET and a LED (light emitting diode) both put into a small light proof case. The advantage compared to vactrols is the much faster response of opto FETs compared to LDRs.