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Yamaha CS20M

Released in 1979

The CS20M is a 2-oscillator monosynth with a 37-note keyboard. The VCF has a dedicated ADSR envelope, and is switchable between low-pass, band-pass, and high-pass. There are 8 locations for storing user presets.

Yamaha CS20M
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We stock both NEW and USED parts; all used electronic parts are tested and guaranteed working.

This listing reflects our current inventory and is updated in real time. If a part is shown as Out of Stock, we typically don't know when or if we might have it again - but click on the part for more info, and then you will be able to sign up for an alert when we do have it available again. By including out of stock parts in our listings, we hope to offer customers a more complete and useful resource.

We cannot diagnose repair issues by phone or email. For technical questions, we suggest posting on our Forums, where our techs - as well as other users - can offer help.

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IC, 4016 quad analog switch
IC, 4016 quad analog switch
$2.95 (Part #3302)
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IC, 4030 quad exclusive OR gate
IC, 4030 quad exclusive OR gate
$3.95 (Part #3303)
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IC, 4050 hex buffer/converter
IC, 4050 hex buffer/converter
$2.95 (Part #1775)
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IC, 4558 dual op amp
IC, 4558 dual op amp
$2.95 (Part #3387)
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IC, Yamaha IG00156 VCF
IC, Yamaha IG00156 VCF
$119.95 (Part #15186)
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IC, YM617 multiplexer replacement
IC, YM617 multiplexer replacement
$42.95 (Part #7259)
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Key return spring, Yamaha
Key return spring, Yamaha
$0.75 (Part #KEYSPX)
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Key return springs, package of 10
Key return springs, package of 10
$6.95 (Part #KEYSPXX)
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Knob, ivory face, Yamaha
Knob, ivory face, Yamaha
$9.95 (Part #9844)
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Knob, tan face, Yamaha
Knob, tan face, Yamaha
$9.95 (Part #8773)
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Pedal, damper-style
Pedal, damper-style
For Sustain, Porta
$44.95 (Part #VFP115)
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Power cord, IEC
Power cord, IEC
$8.95 (Part #PC)
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Slider knob, brown, Yamaha
Slider knob, brown, Yamaha
$15.95 (Part #9024)
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Style 24U key, black note
Style 24U key, black note
$9.95 (Part #K24UBL)
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Style 24U key, note A
Style 24U key, note A
$11.95 (Part #K24UA)
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Style 24U key, note B or E
Style 24U key, note B or E
$11.95 (Part #K24UBE)
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Style 24U key, note C or F
Style 24U key, note C or F
$11.95 (Part #K24UCF)
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Style 24U key, note D
Style 24U key, note D
$11.95 (Part #K24UD)
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Style 24U key, note G
Style 24U key, note G
$11.95 (Part #K24UG)
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Style 24U key, top C note
Style 24U key, top C note
$17.95 (Part #K24UC8)
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Syntaur control voltage pedal
Syntaur control voltage pedal
For Filter Foot Control
$89.95 (Part #CVP100)
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Transistor, 2SA1015
Transistor, 2SA1015
$1.95 (Part #3294)
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Transistor, 2SA490
Transistor, 2SA490
$7.95 (Part #8976)
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Transistor, 2SC1815
Transistor, 2SC1815
$2.95 (Part #1943)
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