Oberheim OB-Xa

Released in 1981

The OB-Xa is a classic analog polysynth, with the ability to split and layer its programs. Made famous by Van Halen's "Jump", the OB-Xa can have 4, 6, or 8-voice polyphony depending on the hardware. It is quite similar in sound to the later OB-8, but the OB-Xa has less-stable oscillators - which contributes to its wilder, wider sound.

Oberheim OB-Xa
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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.

Oberheim OB-Xa replacement keys
Replacement Keys
Battery, 3V lithium
Battery, 3V lithium
$14.95 (Part #4128)
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Bridge rectifier, WO-02S
Bridge rectifier, WO-02S
$3.95 (Part #5145)
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Connector, IDC 34-pin
Connector, IDC 34-pin
$7.95 (Part #1313)
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Diode, 1N4148
Diode, 1N4148
$0.95 (Part #3788)
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IC, 40106 Hex Schmitt trigger
IC, 40106 Hex Schmitt trigger
$2.95 (Part #2128)
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IC, 4011 quad gate
IC, 4011 quad gate
$2.95 (Part #3391)
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IC, 4013 flip-flop
IC, 4013 flip-flop
$2.95 (Part #3322)
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IC, 4049 hex inverter/buffer
IC, 4049 hex inverter/buffer
$2.95 (Part #2382)
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IC, 4051 multiplexer chip
IC, 4051 multiplexer chip
$2.95 (Part #4319)
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IC, 4053 multiplexer switch
IC, 4053 multiplexer switch
$2.95 (Part #3413)
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IC, 723 linear regulator
IC, 723 linear regulator
$3.95 (Part #3428)
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IC, 74C00 NAND gate
IC, 74C00 NAND gate
$5.95 (Part #6104)
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IC, 74C42N BCD-to-decimal decoder
IC, 74C42N BCD-to-decimal decoder
$5.95 (Part #10012)
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IC, 74LS367 buffer/line driver
IC, 74LS367 buffer/line driver
$3.95 (Part #4224)
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IC, 74LS42 monostable multivibrator
IC, 74LS42 monostable multivibrator
$4.95 (Part #4190)
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IC, CEM3310/AS3310 envelope generator
IC, CEM3310/AS3310 envelope generator
$12.95 (Part #3716)
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IC, CEM3320 filter
IC, CEM3320 filter
$16.95 (Part #3717)
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IC, CEM3340 oscillator
IC, CEM3340 oscillator
$29.95 (Part #3926)
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IC, CEM3360/AS3360 VCA chip
IC, CEM3360/AS3360 VCA chip
$11.95 (Part #4063)
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IC, MM5837N noise generator
IC, MM5837N noise generator
$14.95 (Part #5369)
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IC, MP7621 or AD7541 12-bit DAC
IC, MP7621 or AD7541 12-bit DAC
$39.95 (Part #5092)
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IC, TL084 op amp
IC, TL084 op amp
$2.95 (Part #4192)
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Key bushing
Key bushing
$0.70 (Part #4169)
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Key bushing kit, 61-note
Key bushing kit, 61-note
$32.95 (Part #416961)
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Knob, rotary, Oberheim
Knob, rotary, Oberheim
$14.95 (Part #1889)
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Nut, for 1/4-inch phone jack
Nut, for 1/4-inch phone jack
$0.45 (Part #4301)
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Panel switch, black, with LED
Panel switch, black, with LED
For bender panel
$9.95 (Part #4875)
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Panel switch, wide, black with LED
Panel switch, wide, black with LED
$11.95 (Part #2987)
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Panel switch, wide, black without LED
Panel switch, wide, black without LED
$9.95 (Part #2897)
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Phone jack, 1/4-inch, mono
Phone jack, 1/4-inch, mono
For Mono Output
$7.95 (Part #1949)
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Phone jack, 1/4-inch, TRS
Phone jack, 1/4-inch, TRS
For Sustain, Program Advance, Hold
$6.95 (Part #4622)
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Pitch bend/mod lever, Oberheim
Pitch bend/mod lever, Oberheim
$24.95 (Part #1982)
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Potentiometer, 10KB rotary
Potentiometer, 10KB rotary
For Pitch, Mod levers
$24.95 (Part #1993)
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Potentiometer, 50KB rotary
Potentiometer, 50KB rotary
For front panel pots
$19.95 (Part #2943)
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Power cord
Power cord
$7.95 (Part #PC)
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Power switch, illuminated
Power switch, illuminated
$9.95 (Part #5008)
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Ribbon cable, with Computer connector
Ribbon cable, with Computer connector
$19.95 (Part #1416)
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Rubber foot, 5/8-inch tall
Rubber foot, 5/8-inch tall
$7.95 (Part #1936)
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Screws, for keytops, pkg of 10
Screws, for keytops, pkg of 10
$3.95 (Part #3923)
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Slide switch, 2-position
Slide switch, 2-position
For Enable On
$9.95 (Part #5006)
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Slide switch, 2P3T
Slide switch, 2P3T
For Monitor
$12.95 (Part #5007)
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Spacer, aluminum, 5/16-inch
Spacer, aluminum, 5/16-inch
$0.65 (Part #1472)
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Style 34U key, black note
$10.95 (Part #K34UBL)
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Style 34U key, note A
Style 34U key, note A
$12.95 (Part #K34UA)
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Style 34U key, note B
$12.95 (Part #K34UB)
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Style 34U key, note C
$12.95 (Part #K34UC)
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Style 34U key, note D
$12.95 (Part #K34UD)
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Style 34U key, note E
$12.95 (Part #K34UE)
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Style 34U key, note F
$12.95 (Part #K34UF)
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Style 34U key, note G
$12.95 (Part #K34UG)
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Style 34U key, top C note
$17.95 (Part #K34UC8)
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Transistor, 2N3055
Transistor, 2N3055
$7.95 (Part #5245)
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Transistor, 2N3905
Transistor, 2N3905
$1.95 (Part #7447)
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Transistor, 2N5172
Transistor, 2N5172
$1.95 (Part #3295)
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Trim potentiometer, 100K
Trim potentiometer, 100K
$2.95 (Part #5375)
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Trim potentiometer, 10K
Trim potentiometer, 10K
$2.95 (Part #1594)
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Trim potentiometer, 10KB
Trim potentiometer, 10KB
$5.95 (Part #1924)
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Voltage regulator, LM340KC-5.0
Voltage regulator, LM340KC-5.0
$10.95 (Part #7375)
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Voltage regulator, NTE1919
Voltage regulator, NTE1919
$14.95 (Part #7377)
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Voltage selector switch
Voltage selector switch
$8.95 (Part #1549)
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Washer, beveled nylon insert
Washer, beveled nylon insert
$0.95 (Part #2913)
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Washer, beveled steel
Washer, beveled steel
$0.95 (Part #2914)
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Washer, black, for end panel
Washer, black, for end panel
$0.95 (Part #9490)
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Wiring jumper assembly, 10-wire
Wiring jumper assembly, 10-wire
$10.95 (Part #1330)
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Wiring jumper assembly, 8-wire
Wiring jumper assembly, 8-wire
$7.95 (Part #1326)
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