The Audio Playground Synthesizer Museum

ARP

PRO-DGX 2720 SYNTHESIZER

The ARP Pro-DGX model 2720 has wood for the sides panels.

 

The Pro/DGX was desingned to create the most realistic and expressive voices possible. The Pro/DGX is a model
of operational simplicity, yet its internal analog and digital circuitry is among the most sophisticated in use today.

The Pro/DGX's tone generators, programmable filten and digitalcontrol circuitry account for the remarkable
difference in tone quality that separate it from all other preset synthesizers. Uncompromised voicing takes a lot
of circuitry, but it's worth it when your sound cannot be second best.

The Pro/DGX is thirty different instruments in one portable, practical keyboard. At the touch of a switch,
you can play fiute, piano, harpslcnora, tuba, piccolo, space bass, noze, comic wow and twenty-four other
traditional and not-so-traditional instruments, with each sound stored in a computer memory for immediate access.

For that extra touch of realism, the Pro/DGX also features a pressure-sensitive keyboard that lets you add wows,
growls, brilliance, vibrato, volume and more, just by exerting extra pressure on the keys. Fast-action switches to
the left of the keyboard select any combination of touch sensor effects. Sliders controlling brilliance, volume and
portamento are located just below. A repeat switch lets you achieve very realistic plucked-string sounds when
playing guitar or banjo, and a vibrato speed control proves quite useful for realistic woodwind voicings.

The combination of thirty contrasting voices and six different touch sensor effects expands the Pro/DGX's versatility
beyond that of any other presetsynthesizer. LED status indicators, a professional XLR Cannon connector for balanced
line'hookup, and a solid-steel chassis for life on the road put the Pro/DGX in a classn by itself.

Controls

 

1 Voice Select Switches: Professional click switches select any one of 30 different
traditional or synthesized instruments.

2. Computer LEDs: Light Emitting Diodes indicate selected voice.

3. Touch Sensor Effects: Pitch bend, wow, growl, brilliance, volume and vibrato.

Keyboard responds to any increase in finger pressure.

4. Variable Slider Parameters: Volume, brilliance, touch sensor sensitivity and
portamento. Allows user variability.

5. Transpose: Shifts pitch of entire instrurnen· up one octave from normal or down
one octave from normal.

6. Vibrato Speed Control: Changes rate of vibrnto, tremolo, repeat.

7. Repeat Switch: Reiterates all percussive instruments.

8. Portamento: Creates automatic sliding sound between any two keys. Variable speed.

 

The List Price in 1980 for the Pro/DGX was $1600 US.