Korg MS20 farewell, LM13700 filter + VCO1 PWM and VCO2 Hardsync mods

Published on Aug 19, 2014 wutierson

"Farewell time, my beloved classic Korg MS20 will leave my studio. The new owner will enjoy it a lot.
This unit is modified with VCO1 PWM modulation via patch panel, using the trigger button output. The Trig button is replaced with at simple switch to allow VCO2 hard sync.
The sonic possibilities expanded a lot with only this 2 mods. The best of that is the unit is not drilled, the modifications can be removed, and the unit can be in the original state again.
The video has not any particular musical intention, it's only a resume of my last farewell playing with the MS20, to remember the sound and character with the mods. At the begining, it's hard not to play 'Being Boiled' when the MS20 is modded with the PWM input. I don't play any Korg35 filter version but to my ears the LM13700 sounds very good, specially how the two filters interact one vs other with the resonance at high levels. I don't know if the Korg35 filter have this character.
Not external sequencers or addtional sound sources are present (the rhythm effects and echo sounds are done with the MS20 own possibilities), it's just only the MS-20 sound playing in real time with only a bit touch of reverb. No more external processing, no EQ, compression... etc. Just that."