SK50D has organ, preset strings and polysynth sections. The SK series was a popular combo-keyboard line. SK50D is enclosed in rugged housing, gives 5 octaves with the addition of the second keyboard installed above and features Leslie simulator, vibrato, attack, a slider for “brilliance” settings as well as an octave transpose switch.

The instrument and the series are not multi-featured but the sounds are worth a purchase. The organ section provides adjustable decay, sustain and brilliance. The sounds remind of B3 which is surely good. Organ section is based on FM and with the addition of some vibrato, tremolo or ensemble chorus you can achieve that 70s sound.

SK50D can be proud of its strings section which is always a delicate part of sombo keyboards but the SK series make it sound as decent as ARP Omni does. SK50D got a polysynth section added. The synth part has a 7-note polyphony and two oscillator per voice offering filter, envelope, pitch, and portamento amount control. The oscillators can be detuned. It’s not for aggressive leads or beat but evolving soft pads can be lustrous.

SK50D adds a solo synth section represented by one VCO monosynth offering such basic functions as pitch, filter which is not the most powerful feature, volume, envelope and portamento control.

There’s a bass section added in SK50D which gives a set of tone generators and controls for creating sonically replete bass parts.

The instrument has nothing extra – just play it. No user memory, arpeggiator or sequencer. It’s a solid voice in a sturdy classic wooden-panel housing with a keyboard split mode and a number of basic instrumental section with separate audio outputs.