The PG-1000 is the dedicated programmer for the D-50 and D-550: pretty straightforward to use and all functions are clear and labeled, surely this little box can help you access deeply hidden parameters transforming the D-50 into a kind of JD-800. Unlike the PG-800 for the Roland MKS-70 it works by MIDI system exclusive, and requires an external 9V power supply. It has no less than four MIDI sockets: data to the MIDI In is echoed to the MIDI Thru, and also merged with locally generated sys-ex and sent to the D-50/D-550 on the MIDI Out. The parameter in socket allows patches to be downloaded from the D-50/D-550's MIDI Out for editing.
The PG-1000 sports an impressive number of faders, but many are in fact overloaded several times for each patch's four partials, two tones and one common parameter block. Even so, programming is fairly easy, since parameter values are displayed in the backlit LCD, and there are dedicated partial/tone select buttons.
Programmer: main panel features 64 sliders + 8 buttons that manages every parameter of the LA synthesizers. Each value is showed on the LCD display with a nice blue backlight
Back Panel: Midi interface, Midi merger parameter input