Oberheim 2, 4, 8-Voice

Released in 1975

The SEM (Synthesizer Expander Module) was Oberheim's first synthesizer, and two of these plus a sequencer module and 37-note keyboard were combined to make the Oberheim 2-voice. The 4-Voice (pictured) was a combination of four SEMs, sequencer, and 49-note keyboard. The 8-Voice (1977) had 8 SEMs, a 49-note keyboard, and a programmer module, and can be used polyphonically.

Oberheim 2, 4, 8-Voice
All photos are copyrighted by Syntaur, and may not be used without permission.

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.

Filter
Category

All
Batteries
Books/Manuals
Cables
Circuit boards
Displays
Electronic Components
Hardware
Jacks & Connectors
Keybed Parts
Keys
Knobs & Buttons
Music Rests
Other
Panel controls
Pedals
Power Adapters
Sounds
Speakers
Transformers
Battery, 3V lithium
Battery, 3V lithium
$17.95 (Part #4128)
Click for details
Diode, 1N4002
Diode, 1N4002
$0.95 (Part #7994)
Click for details
Diode, 1N4148
Diode, 1N4148
$0.95 (Part #3788)
Click for details
IC, 3080 OTA
IC, 3080 OTA
$8.95 (Part #3298)
Click for details
IC, 3086 transistor array
IC, 3086 transistor array
$9.95 (Part #3975)
Click for details
IC, 4001 quad NOR gate
IC, 4001 quad NOR gate
$2.95 (Part #3304)
Click for details
IC, 4002 quad NOR gate
IC, 4002 quad NOR gate
$2.95 (Part #3350)
Click for details
IC, 4016 quad analog switch
IC, 4016 quad analog switch
$2.95 (Part #3302)
Click for details
IC, 40174 flip-flop (replaces 14174)
IC, 40174 flip-flop (replaces 14174)
$2.95 (Part #3305)
Click for details
IC, 4024 binary counter
IC, 4024 binary counter
$2.95 (Part #10651)
Click for details
IC, 4028 decoder
IC, 4028 decoder
$2.95 (Part #1945)
Click for details
IC, 4030 quad exclusive OR gate
IC, 4030 quad exclusive OR gate
$3.95 (Part #3303)
Click for details
IC, 723 linear regulator
IC, 723 linear regulator
$4.95 (Part #3428)
Click for details
IC, 741 op amp
IC, 741 op amp
$2.95 (Part #3297)
Click for details
IC, CD4512 8-channel data selector
IC, CD4512 8-channel data selector
$2.95 (Part #11221)
Click for details
IC, LM301 op amp
IC, LM301 op amp
$9.95 (Part #3300)
Click for details
IC, UA308TC or NTE938M op amp
IC, UA308TC or NTE938M op amp
$15.95 (Part #3296)
Click for details
J-wire guide
J-wire guide
$6.95 (Part #3182)
Click for details
Key bracket, black key
Key bracket, black key
For models with K34U keys
$4.95 (Part #PRKBB)
Click for details
Key bracket, white key
Key bracket, white key
For models with K34U keys
$4.95 (Part #PRKB)
Click for details
Key bushing
Key bushing
$0.74 (Part #4169)
Click for details
Key bushing kit, 37-note
Key bushing kit, 37-note
For 2-Voice
$24.95 (Part #416937)
Click for details
Key bushing kit, 49-note
Key bushing kit, 49-note
For 4-Voice and 8-Voice
$30.95 (Part #416949)
Click for details
Key bushings, bulk pkg (100)
Key bushings, bulk pkg (100)
$59.95 (Part #4169B)
Click for details
Key return spring
Key return spring
For K34U white keys
$3.95 (Part #KEYSPM)
Click for details
Key return spring
Key return spring
For K34U white keys
$3.95 (Part #KEYSPM)
Click for details
Key return spring
Key return spring
For K34U black keys
$3.95 (Part #KYSP16)
Click for details
Key return spring
Key return spring
For K17U white keys
$3.95 (Part #KYSP17)
Click for details
Knob cap, black
Knob cap, black
For SEM VCO Frequency (upper knobs), Mini Sequencer CV Preset knobs
$3.95 (Part #2635)
Click for details
Knob cap, black
Knob cap, black
For all except VCO Frequency
$3.95 (Part #7791)
Click for details
Knob pointer
Knob pointer
(This pointer is slightly smaller than the original SEM pointers)
$1.95 (Part #7789)
Click for details
Knob, large collet
Knob, large collet
(Regular knobs use #7789 pointer, top row of knobs use a larger skirt which is no longer available. )
$10.95 (Part #7790)
Click for details
Knob, small collet
Knob, small collet
Upper knob for for SEM VCO Frequency, Mini Sequencer CV Preset
$7.95 (Part #7788)
Click for details
LED mounting clip
LED mounting clip
$2.95 (Part #3230)
Click for details
Phone jack, 3.5mm
Phone jack, 3.5mm
$9.95 (Part #5087)
Click for details
Potentiometer, 47KA with switch
Potentiometer, 47KA with switch
For VCF Notch
$16.95 (Part #7198)
Click for details
Power cord, Arp/Oberheim style
Power cord, Arp/Oberheim style
$24.95 (Part #PCARP)
Click for details
Screws, for keytops, pkg of 10
Screws, for keytops, pkg of 10
$3.95 (Part #3923)
Click for details
Slide switch, 2-position
Slide switch, 2-position
For Sync, VCA
$12.95 (Part #5006)
Click for details
Slide switch, 2P3T
Slide switch, 2P3T
For Modulation switches
$16.95 (Part #5007)
Click for details
Style 17U key, black note
Style 17U key, black note
For later models
$13.95 (Part #K17UBL)
Click for details
Style 17U key, note A
For later models
$17.95 (Part #K17UA)
Click for details
Style 17U key, note B
For later models
$17.95 (Part #K17UB)
Click for details
Style 17U key, note C
For later models
$17.95 (Part #K17UC)
Click for details
Style 17U key, note D
For later models
$17.95 (Part #K17UD)
Click for details
Style 17U key, note E
For later models
$17.95 (Part #K17UE)
Click for details
Style 17U key, note F
For later models
$17.95 (Part #K17UF)
Click for details
Style 17U key, note G
For later models
$17.95 (Part #K17UG)
Click for details
Style 17U key, top C note
Style 17U key, top C note
For later models
$24.95 (Part #K17UC8)
Click for details
Style 34U key, black note
Style 34U key, black note
For early models
$10.95 (Part #K34UBL)
Click for details
Style 34U key, note A
Style 34U key, note A
For early models
$12.95 (Part #K34UA)
Click for details
Style 34U key, note B
Style 34U key, note B
For early models
$12.95 (Part #K34UB)
Click for details
Style 34U key, note C
Style 34U key, note C
For early models
$12.95 (Part #K34UC)
Click for details
Style 34U key, note D
Style 34U key, note D
For early models
$12.95 (Part #K34UD)
Click for details
Style 34U key, note E
Style 34U key, note E
For early models
$12.95 (Part #K34UE)
Click for details
Style 34U key, note F
Style 34U key, note F
For early models
$12.95 (Part #K34UF)
Click for details
Style 34U key, note G
Style 34U key, note G
For early models
$12.95 (Part #K34UG)
Click for details
Style 34U key, top C note
Style 34U key, top C note
For early models
$17.95 (Part #K34UC8)
Click for details
Syntaur control voltage pedal
Syntaur control voltage pedal
$84.95 (Part #CVP100)
Click for details
Transistor, 2N3904
Transistor, 2N3904
$1.95 (Part #5176)
Click for details
Transistor, 2N3905
Transistor, 2N3905
$1.95 (Part #7447)
Click for details
Transistor, 2N5172
Transistor, 2N5172
$1.95 (Part #3295)
Click for details