Available as an assembled Module and as a DIY project.
This Module is currently available.
TB-303 inspired Env and Filter
TB-EF takes the classic 3 and a bit pole low pass filter from the 303 and brings with it the semi-fixed envelope that is intrinsic to the instantly recognisable 303 filter sweep.
All the usual 303 tweaking is here, cutoff, resonance, envelope modulation and accent. But why not take it a bit further with the “chirp” control, push the resonance into crazy realms.
The filter will open and close without a gate, but add the trigger and boom you have that classic 303 decay across the envelope. Add an accent trigger for more oomph.
Of course it wouldn’t be complete without CV control over that cutoff!
Built using NOS components, as used in the original 303, this module when combined with TB-O can give you a classic 303 voice in your rack, but can take on many more sonic personalities to boot.
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