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ARP | Pro-DGX
The Pro/DGX is a thirty preset monophonic analog synth based on the Pro-Soloist and made from 1977 until the company's demise in 1981. The main difference is that the Pro/DGX had electronic switching (touch buttons) between its preset sounds whereas the older Pro-Soloist had circuit-based switching (rocker switches). It has 30 preset sounds to choose from, including Flute, Bassoon, Brass, Fuzz Guitar etc. Other features included pitch, portamento, vibrato, growl and wow effects. The keyboard has 37 keys with aftertouch sensitivity for volume, brilliance, vibrato, wow, growl, and even bend effects (all at once if you desire!). A few basic filter, envelope and LFO controls allow some tweaking of the preset sounds, however there is no memory to store your settings.
The Pro/DGX sounds slightly different than the Pro-Soloist however. The presets are virtually the same, but the Pro/DGX implemented 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". Both synths refer to their single filter control (the filter cutoff) as "Brilliance". A few additional control sliders are available for the Volume, Portamento Time and Aftertouch Amount. Later on during its production, the Pro/DGX was released with the "Orange+Black" look of later ARP synths.
|Engine Detailed||1 VCO|
|Filter (VCF)||1 slider "Brilliance"|
|Produced:||1977 - 1980|
|Legend:||Obvious||Y: Yes, N: No, N/A: Not Applicable|
|VCO||Voltage Controlled Oscillator||DCO||Digital Controlled Oscillator|
|LFO||Low Frequency Oscillator||Sub||Sub Oscillator|
|VCF||Voltage Controlled Filter||VCA||Voltage Controlled Amplifier|
|Velocity||As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key.||Aftertouch||Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.|
|Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.|