 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-1970s 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.