Yamaha SK50D 122 Key Analog Synthesizer

via this auction

"1980 Yamaha SK50D Analog Synthesizer
-122 key 2 tier synthesizer
-Built in Monosynth, Polysynth, Bass, Strings, and Organ
-Very good cosmetic condition, great working condition!
-Similar to ARP Quadra, Yamaha CS series, Yamaha GX series
-One of the rarest and hardest to find 80’s Yamaha synths

Here is the flagship of early 80’s Yamaha synthesizers. The SK50D is a multi-instrument analog synthesizer with built in effects. It features dozens of sliders, knobs, switches, and lights allowing the user to create an infinite amount of unique sounds. Its got a fully tweakable monosynth and fully tweaklable polysynth.

The monosynth features 1 VCO and the polysynth feature 2 VCO’s. It also features full ADSR as well as a Low Pass Filter. Built in effects include Glide, Portemento,Vibrato, Tremelo and Ensemble. It features independent jacks to each instrument which allows the user to customize and project each individual instrument to the users preference. It works great. The pots are clean and all switches engage. Besides a few small cosmetic blemishes, its in terrific condition. Its quite enormous, a bit larger than a CS-80 and tips the scale at over 100 lbs. Its one of the largest non-modular synths I have ever come across."