ACID CIRCUIT SYNTHESIZER · BY A*S*Y*S & PARAFRAME
DESIGNED BY PRODUCERS. FOR PRODUCERS.
The classic acid sound, rethought from a producer’s perspective. ACIDKING has its own dense, fat character and the tools that used to take a chain of plugins, now inside one instrument.
THE IDEA
The classic acid sound. Reimagined for modern producers.
We didn’t set out to build the most faithful clone. We set out to build the acid synth we wanted in our own sessions: one voice, accent and slide, a resonant filter that screams, and everything we used to stack around it with extra plugins, automation lanes and MIDI effects.
What used to take five steps now happens inside one instrument. Every feature in ACIDKING comes from our own production practice.
MODULATION
Right-click a knob, choose LFO 1 or LFO 2, done. Filter, envelopes, OSC B, unison, DRIVE, PARAECHO, the PARADIST crossovers and band levels, even the other LFO. Live rings on the knobs show the movement without touching your settings.
Nine shapes, synced to your host or free. SIDECHAIN and SC SMOOTH pump, STUTTER 4 and SAW STUTTER 4 chop. No sidechain cable, no extra plugin.
OSC B + UNISON
A second oscillator with its own level, tuning of up to two octaves either way and fine detune. Unison stacks up to seven voices and spreads them across the stereo field. The line stays mono, so slides and accents behave like acid should, but the sound gets wide, thick and heavy.
PARADIST + DRIVE
PARADIST splits the spectrum into low, mid and high. Drive each band on its own, pick one of five characters from SOFT to HARD and drag the crossovers right on the graph. Put an LFO on a crossover and the distortion moves like a formant. Thirteen presets of its own.
DRIVE adds three-band compression and saturation on a single knob: quiet detail comes forward, peaks stay under control, the line gets denser.
SEQUENCER + LOOP
16 patterns with up to 32 steps, each with its own rate, swing, gate, direction and slide time. LOOP splits any step into 2, 3 or 4 audio repeats: the small rhythmic escalations that keep an acid line alive.
RANDOM writes new lines in seven scales, MUTATE varies the one you have. Drag any pattern into your DAW as MIDI, or drop a MIDI file in.
TAKE A LOOK
ALSO INSIDE
SAW and PULSE, RETRO movement, the diode-style ACID filter and the ladder-style TRANSISTOR. ACCENT, ACC DECAY and ACC SWEEP shape every accented note.
KEY mode starts and transposes a pattern from your keyboard. Switch the sequencer off and play a mono synth with legato slides, velocity accents and MIDI Learn.
Drag a pattern onto a DAW track as MIDI, or drop a .mid file onto a pattern. Accents and slides travel with the notes.
Ping-pong delay, free or synced to your host, with low cut, high cut and stereo width.
Every preset stores the sound and all 16 patterns. Start from a clean Init, or lock the sound or the pattern and swap only the other.
Aged black metal with an enamel crown, or satin silver. The window scales to your screen.
THE CREATORS
ACIDKING grew out of two producers’ daily work: one shaped by acid lines on festival stages, the other by electronic music and film.
PRODUCER · DJ · CO-CREATOR
German producer and DJ whose acid lines, forceful rhythms and long connection to techno and hard trance have become a recognisable musical language. His sets have taken that sound to Nature One, Verknipt, Rave The Planet and other international stages. His label work includes Fe Chrome and Chrome Red.
PRODUCER · FILMMAKER · CO-CREATOR
Frankfurt-based producer and filmmaker connecting electronic music with cinematic storytelling. His audiovisual show Metropolis premiered at Kappa FuturFestival 2026 in Turin and won the Reply Music Contest Grand Prix; the Metropolis album has passed two million streams. His single Heartbeat on Purified Records held a Top 3 position in Beatport’s Progressive House chart for several weeks.
SYSTEM REQUIREMENTS
ACIDKING is an instrument plugin and needs a host that loads AU, VST3 or CLAP. Latency is 18 samples at 44.1 and 48 kHz; your DAW compensates for it.
FAQ
No. It keeps the classic acid DNA: one voice, accent, slide and a screaming resonant filter. Then it adds what we missed as producers: a second oscillator, unison, two LFOs for any sound parameter, three-band distortion and per-step audio repeats.
No. Like the classic acid boxes it plays one note at a time, and overlapping notes slide into each other. UNISON stacks up to seven voices on that one note for a wider sound.
No. The LFO shapes SIDECHAIN and SC SMOOTH duck the volume in time with your host, and STUTTER 4 and SAW STUTTER 4 chop it. ACIDKING has no external audio input and doesn’t need one.
Yes. Drag a pattern onto a MIDI track in your DAW and accents and slides come with it. LOOP repeats and effects stay inside ACIDKING, so bounce the audio when you need the exact performance.
Yes. Your DAW project saves the sound, all 16 patterns and your MIDI Learn mappings. You can also export a preset as an .acidking file and share it.
Soon. Join the waitlist and we’ll email you the moment ACIDKING is available.
ACIDKING is coming soon. One email when it’s out, no spam.
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