Doepfer A-124 Wasp Filter
Gritty Wasp-inspired multimode filter with distinctive analog dirt
8 HP Eurorack module
The A-124 is a distinctive 12dB/octave multimode filter recreating the unique circuitry of the late-70s EDP Wasp synthesizer. Its peculiar design 'abuses' digital inverters as analog op-amps, creating characteristic distortions and 'dirty' effects that give this filter its signature gritty sound.
Features
- 12dB/octave slope
- Wasp synthesizer circuit recreation
- Cannot self-oscillate
- Dual CV inputs with attenuator
- Built-in distortion and dirty effects
- Simultaneous BP and LP/HP outputs
Controls & Jacks (11)
- Frequency — Filter cutoff frequency
- CV 2 Amount — Attenuverter for CV 2 input amount and polarity
- Res — Resonance/emphasis control
- Mix — Controls relative amounts of low-pass and high-pass signals
- Level — Input signal level
- Freq CV — CV input for cutoff frequency modulation
- LP/HP Out — Low-pass/high-pass mix output, blended by Mix knob
- CV 1 — Secondary CV input for frequency modulation
- Audio In — Main audio input to be filtered
- BP Out — Band-pass filter output
- Audio Out — Main audio output
How-To Guides
- Classic Acid Sweep
- Phasing Notch Effect
- Dual Filter Textures
- Percussive Bandpass Hits
- Bass Grit Enhancement
- Random Spectral Shifts
- Envelope Follower Response
- Sequencer Rhythmic Filtering
Explore the interactive A-124 Wasp Filter panel on BleepDex — tap any control to learn what it does.
