Roland MC-303

Released in 1996

The MC-303 Groovebox is an 8-track sequencer with a 28-voice synth engine, along with reverb, delay, chorus , and flanger effects.

Synth
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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.

Battery holder
Battery holder
$3.95 (Part #3090)
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Battery, 3V lithium
Battery, 3V lithium
$2.95 (Part #4347)
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Button, black with LED window, Roland
Button, black with LED window, Roland
For black key
$7.95 (Part #2569)
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Button, gray, with LED window, Roland
Button, gray, with LED window, Roland
For Play
$4.95 (Part #6285)
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Button, gray, without LED window, Roland
Button, gray, without LED window, Roland
For Stop
$5.95 (Part #1462)
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Button, gray, without LED window, Roland
Button, gray, without LED window, Roland
For Part Select, Part Mute, Rhythm Mute
$9.95 (Part #5082)
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Button, no LED window, Roland
Button, no LED window, Roland
For Select (L & R)
$3.95 (Part #3644)
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Button, red, with LED window, Roland
Button, red, with LED window, Roland
For Record
$4.95 (Part #6287)
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Button, white with LED window, Roland
Button, white with LED window, Roland
For white key
$9.95 (Part #2568)
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Button, with LED window, Roland
Button, with LED window, Roland
For Kbd Pad, Transpose, Ptn Set, Rps Set
$3.95 (Part #3911)
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Cord lock
Cord lock
$4.95 (Part #2777)
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Encoder
Encoder
$19.95 (Part #3686)
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Encoder knob, Roland
Encoder knob, Roland
$10.95 (Part #3027)
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Knob, rotary, Roland
Knob, rotary, Roland
$5.95 (Part #3560)
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Phone jack, 1/4-inch, 4-pin PCB mount
Phone jack, 1/4-inch, 4-pin PCB mount
For Phones
$6.95 (Part #3654)
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Phone jack, 1/4-inch, 4-pin PCB mount
Phone jack, 1/4-inch, 4-pin PCB mount
For Outputs, Pedal Sw
$9.95 (Part #3688)
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Potentiometer, 10KB rotary
Potentiometer, 10KB rotary
For all except Volume
$9.95 (Part #3029)
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Potentiometer, 10KBx2 rotary
Potentiometer, 10KBx2 rotary
For Volume
$8.95 (Part #2037)
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Potentiometer, 10KBx2 rotary
Potentiometer, 10KBx2 rotary
For Low Boost
$9.95 (Part #5403)
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Power adapter, 9VDC, 1000mA
Power adapter, 9VDC, 1000mA
$18.95 (Part #4811)
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Power inlet jack
Power inlet jack
$5.45 (Part #3062)
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Pushbutton tact switch, 5mm, 2-pin
Pushbutton tact switch, 5mm, 2-pin
For keys and Tap
$2.95 (Part #1469)
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Pushbutton tact switch, 5mm, 2-pin
Pushbutton tact switch, 5mm, 2-pin
For all except keys and Tap
$1.95 (Part #4478)
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Pushbutton tact switches, 5mm, pkg of 10
Pushbutton tact switches, 5mm, pkg of 10
For all except keys and Tap
$11.95 (Part #4478X)
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Rubber foot, 3/8-inch tall, with lock pin
Rubber foot, 3/8-inch tall, with lock pin
$9.95 (Part #2439)
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Switch cap, black
Switch cap, black
For Power
$4.95 (Part #4665)
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