Electronica and Hiphop sounds emerge equally with transcendental control and flexibility. Multiple filter capability and a warmly transparent thickness, combine to make the ATC-1 a ready option for the musician who demands performance AND economy. Accessories include: S.E.M., 303 and 2600 "plug-in" filter cartridges - unit ships w/1 MINI filter cartridge - or if one's needs so demand, those same filters as internally* mountable "plug-ins"; (Both designs all hardware of course!) the SELECTOR, (Deep breath...) a MIDI controllable, single rack space - in its external incarnation - 4X filter docking bay is available as an internal* MIDI switching holder, as well.

Extended information

Two voltage controlled discrete analog oscillators
Waveforms: triangle, sawtooth and variable width square. All waveforms output simultaneously. Syncing of Osc 2 to Osc 1.

Unique cartridge based filter system
Four interchangeable discrete voltage controlled filters: Moog, S.E.M., 303 and 2600. Main unit holds only one cartridge but optional Selector unit allows use and access to all types at the touch of a button. Patches store filter selection.

Two low frequency oscillators
Waveforms: triangle, sawtooth, reverse sawtooth, square, noise, random. Parameters: destination, depth, key trigger, phase and midi sync.

Three multiple stage envelope generators
Attack, decay, sustain and release with inverting and multiple triggering. Envelope 1 fixed to filter frequency. Envelope 2 fixed to amplifier level. Envelope 3 is assignable. Oscillator 2 audio frequency modulation (cross-mod). Destinations: Osc 1 frequency and filter frequency.

Additional Features
White noise generator. External input processor. Exponential glide. Parameters: time, autoglide interval and destination. CV and GATE input and output.

MIDI Specifications
In and out. Receives: program change, bank select, glide on/off, glide time, volume and sysex. Controllers: dynamics, modwheel, bender, pressure each with one destination and amount. Fixed continuous controller assignments for all key functions.

Modulation Destinations
LFOs 1&2 and envelope 3: VCO 1&2 frequency, pulse width and mix level, VCF frequency and resonance, noise level, Xmod mod amount, LFOs 1&2 rate and depth, VCA level.

MIDI Controllers
Modwheel and pressure: all LFO1&2 and envelope 3 destinations, including envelopes 1&3 amount. Dynamics: envelopes 1,2&3 amount. Bender: pitch and filter frequency.

Technical specifications

Voices: one.
Audio outputs: one.
Display: 3 digit LED.
Memory: 512 patches in RAM.
Interface: 1 digital rotary encoder and 50 membrane switches.
Weight: 10 lbs.
Dimensions: 2 rack spaces, 10 inches deep.
Power: 90 - 250 volts AC auto switching.