Waldorf MiniWorks 4Pole Filter

via this auction

"Without doubt, no other synthesizer component has such a decisive effect on sound quality as does the filter. All of us at Waldorf, and of course the owners of Pulse's and Pulse Plus', know all about the exceptional qualities of our analog filters. We would obviously like all musicians to have the chance to access this quality component, so we simply implemented it as a separate module. The 4-pole is our four pole cascade filter, combined with incredibly fast envelopes and a stereophonic amplifier stage. You are free to apply this filter to any audio signal that you manage to patch into the device via a 1/4" jack. So if your favourite sampler or sample player lacks that special quality, you can give it a sonic boost via the 4-pole. You can even overdrive the audio input to get distorted signals, if you like. Cutoff Frequency, Resonance, Volume and Pan may be modulated by numerous modulation sources, eg. LFO, envelopes, MIDI or the built-in envelope follower.


Technical Features:
Waldorf 24 dB lowpass filter with variable resonance up to self-oscillation
40 programs, divided into 20 ROM presets and 20 user programs
24dB analogue low pass filter with resonance up to self-oscillation
Filter input can be overdriven
stereophonic VCA with real-time panning modulation
VCF ADSR envelope
VCA ADSR envelope
LFO (5 different waveforms; tri, sin, saw, pulse, sample&hold)
15 modulation sources
Envelope follower
4 edit knobs
1 gain knob
1 trigger level knob
5 buttons
Large 3 x 7 segment LED display
monophonic audio input
seperate trigger input
stereophonic audio output pair
MIDI In/Out/Thru
Waldorf Blue Suede Coat, alloy console chassis
Dimensions: 11" width, 5 3/8" to 5" height, 1 7/8" to 1 3/8" depth including 1/8" rubber feet"