Rackears IconRackears.io
ATC-1 - Image 1

ATC-1

RackmountAnalogMonophonic

Back in 1997, this rackmount synth burst onto the scene with a killer trick: swappable filter cartridges that let you channel the souls of legends like the Minimoog, Roland TB-303, ARP 2600, or Oberheim SEM, all from one compact analog powerhouse.

At its core, two voltage-controlled oscillators deliver triangle, sawtooth, and variable-width square waves, with osc sync, cross-modulation, and white noise for thick leads and basses. Two LFOs—packing triangle, saw, reverse saw, square, noise, random, and sample & hold—modulate pitch, filter freq, resonance, osc levels, pulse width, noise, and volume, while three ADSR envelopes handle VCA, VCF, and extras like osc2 freq or LFO depth. Editing happens via 50 membrane switches and a single data knob on its Moog Source-inspired panel, with a three-character LED display, 512 patch memories, MIDI/CV/gate I/O, and external audio input to the filter. It's a 2U unit, 10 inches deep, weighing 10 lbs, with one stereo audio out and universal 90-250V power.

Players love its authentic, thick analog tone—Fatboy Slim swore by it—and rave about the filter swaps for endless classic vibes, though the one-knob editing suits studio tweaking more than live jams.

Released

1997

Status

Discontinued

Synthesizer
Format
Rackmount
Type
Subtractive
Internal Battery
No
Voice
A/D
Analog
Polyphony
Monophonic
Oscillators
2
Oscillator Type
VCO (Voltage Controlled)
Voices
1
Filter
Lowpass, Multimode
Envelopes
3
LFO
2
Effects
No
Expression
Aftertouch
No
Velocity
Yes
MPE
No
Additional
-
Software
-
I/O
Audio In
-
Audio Out
1 stereo
Headphone
-
MIDI
In, Out
MIDI Type
DIN (5-pin)
Ports
CV/Gate, Gate Out
Wi-Fi
No
Workflow
Arpeggiator
-
Sequencer
-
Mod Matrix
-
Memory
512 patches
Measurements
Dimensions
-
Weight
-
Last updated Mar 22, 2026