Yes, the Waldorf 2-Pole is what stained my brain and a great value and very utilitarian. Here's the specs from waldorf-music.de:
Specifications
Specifications
•Fully analog signal path: Preamp -> Filter -> Overdrive
•Award winning Waldorf analog multimode filter technology
•Filter can be modulated by LFO, envelope follower or external signal
•Preamp with overdrive capability for direct connection of instruments like bass or guitar
•Post-filter overdrive with adjustable gain
•LFO with different ranges, rate up to several kHz
•Envelope follower with trigger section and different modes
•True Bypass
•Cascadable to stereo (for two 2-pole units)
Controls
•Input Gain with level LED
•Rectify pot for mixing-in the rectified input signal
•Filter Cutoff pot
•Filter Resonance pot
•Bipolar Filter Env Mod pot
•Filter Type switch
•Overdrive pot
•Activation switch
•Output Level pot
•LFO Range switch with 3 positions
•LFO Rate pot with LED
•LFO Mod Depth pot
•Trigger Button with LED
•Trigger Threshold pot
•Trigger Hold pot
•Envelope Follower Source switch with 3 positions
•Envelope Follower Attack pot
•Envelope Follower Decay pot
Connections
•Audio In
•Audio Out
•Cutoff CV In
•Envelope Follower CV In
•Trigger In
•Power DC 12V
