Siel DK 80 Synthesizer Keyboard

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"According to an expert I found on a forum online...The Siel DK-80 is an odd synth that could be said to bridge the gap between low end mid-eighties Roland and Sequential type synthesizers. It is an analog synth with digital control. It is also bi-timbral with a split keyboard mode giving you 2 polysynths in one keyboard! The sounds are OK, and the DK-80 makes a great backup synth. It has an on-board two-track sequencer, chord memory and hold, programmable stereo panning and sweeping. Parameters are edited one at a time and via membrane push buttons. For a fair price the DK-80 is certainly an exotic addition to any synth set up but may be too limited to use as your main or only analog synth."

"The Siel DK-80 is a bi-timbric, polyphonic synthesizer with voice assignment containing 12 complete and individual synth modules (termed voices or channels). It is fully programmable and able to store up to 50 programs in its computer memory and groups of 50/100 programs in the RAM/ROM packs.(additional mem.), which can be inserted into the special Cartridge location. The instrument is provided with 12 oscillators (DCO), 1 pink noise generator, two 24db/octave low pass Voltage Controlled filters (VCF), 14 digital envelope generators(DEG) and 4 low frequency oscillators (LFO), providing a parallel modulation of parameters such as pitches and filters. All this is controlled by specific controls on the EDIT section and memorized in the heart of the DK-80; the Programming Unit. The Programming unit also controls the 50 factory programs (40 not programmable and 10 programmable) and the 50 or 100 external programs: 50 (programmable) on a RAM pack, or 100 (not programmable) on ROM pack. Thus the DK-80 can control up to 150 musical programs simultaneously; 50 internal ones plus 50 (on RAM) or (ROM) external ones which are recalled directly by the Programming Unit."