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ARP Pro/DGX Synthesizer Model 2720

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    The ARP Pro/DGX is a preset-based monophonic electronic music synthesizer manufactured by ARP Instruments, Inc. from 1977 until the company's demise in 1981.

    Like its predecessor, the Pro Soloist, it features 30 presets and aftertouch. In fact, it looks almost identical to the Explorer and Pro Soloist. However, there are some notable differences. The Pro/DGX was housed in a new steel chassis, which was much sturdier than that of the Pro Soloist. Presets were now accessed via digitally latched momentary pushbuttons with LED indicators, as opposed to the more retro, flapper-style toggle switches used in the Pro Soloist.

    The first run of this synth looks very much like the Pro Soloist in layout and colour scheme, though subsequently, it was produced using ARP's late 70's Orange and Black colour scheme, like the Quadra and Odyssey Mk-3.

    The presets on the Pro/DGX are identical to those found on the Pro Soloist. However, it does sound slightly different, due to the implementation of a new filter design. Many describe the sound of the Pro/DGX as warm, and compare it favourably to its predecessor. However, some say it lacks the quality of the Pro Soloist filter, perhaps less "organic".

    The presets are as below:

    Bassoon, English Horn, Oboe, Clarinet, Flute, Tuba, Trombone, French Horn, Trumpet, Cello, Violin, Bass, Piano, Banjo, Fuzz, Guitar 1, Buzz Bassoon, Sax, Space Reed, Telstar, Song Whistle, Noze, Pulsar, Comic Wow, Mute Trumpet, Steel Guitar, Harpsichord, Space Bass, Steel Drum, Country Guitar, Fuzz Guitar 2
    Type: Analog
    Synthesis: Subtractive
    Oscillators: 1
    Waveforms: Pulse, Saw Up, Square
    Osc Modulation: After Touch, Keyboard, LFO
    Envelopes: 2
    Evelope Paramerters: Attack, Decay, Sustain, Release
    Filters: 1
    Types: 24dB Slope (4-pole), Low Pass
    Filter Modulation: Envelope, LFO
    LFO: 1
    LFO Parameters: Triangle
    Polyphony & Tuning
    Polyphony: 1
    Timbrality: 1
    Tuning: Standard
    Modes: Mono
    Patches RAM: 1
    Patches ROM: 30
    Storage: Internal
    Case: Keyboard
    Keyboard: 37 keys, Non-weighted, Plastic
    Controls: Aftertouch, Buttons, Faders, Switches
    Display Type: LED
    Audio Output Connections: 1/4" Phone Jack, XLR, Mono Out
    Year Released: 1977
    Year Discontinued: 1981
    Units Made: 900
    Used By
    Tony Banks, Philip Dodds, Vangelis, Jon Lord, Patrick Moraz, Kansas, Joe Zawinul, Gary Numan, Tangerine Dream, Renaissance, Wings
    Manuals & Documents
    MSRP List Price: $1,295 - convert
    Retail Street Price: $1,000 - convert
    Used Price: $2,000 - $2,500 - convert
    YouTube Videos
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