Synth & Eurorack Parts / DIY

Our Synth & Eurorack Parts / DIY category is a curated list of items that are commonly found in synth/eurorack projects. The items and filters here do not represent our full lineup of parts. If you don't see what you are looking for, check out our main categories or send us a suggestion and we'll look into adding it.
R-VNUT-38-M Nut & Washer - Panel, for ⅜" Potentiometers and Jacks
Replacement nut and washer for pots and jacks that feature a ⅜" bushing with 3/8-32 threading. Sold in packs containing 100 nuts and 100 washers.
$25.00
package of 100
R-VPC01 Photocell - Morley, for Effects Pedals
Photocell for Morley effects pedals. Great replacement for LDR1, LDR2 and LDR3 (M79-211564-000) in Morley Pro Series Volume PVO. Sold individually.
A photocell may also be referred to as a photoresistor, LDR, or light dependant resistor.
$2.50
R-VSHL-AX Potentiometer - Song Huei, Audio, 9mm, Tall
Audio taper, vertical mount, Song Huei pots with a 6mm shaft. These 9mm pots are popular in DIY guitar pedals, modular synthesizers, and other projects where space is limited. The knurled shaft features a painted indicator line so no knob is required. These tall versions have a 17mm shaft length and a total height of 25mm. For linear taper versions, see R-VSHL-BX. For center notched, linear taper versions, see R-VSHL-BX-CN.
$0.95
R-VSHL-BX Potentiometer - Song Huei, Linear, 9mm, Tall
Linear taper, vertical mount, Song Huei pots with a 6mm shaft. These 9mm pots are popular in DIY guitar pedals, modular synthesizers, and other projects where space is limited. The knurled shaft features a painted indicator line so no knob is required. These tall versions have a 17mm shaft length and a total height of 25mm. For audio taper versions, see R-VSHL-AX. For center notched linear taper versions, see R-VSHL-BX-CN.
$0.95
R-VSHL-BX-CN Potentiometer - Song Huei, Center Notched, Linear, 9mm, Tall
Linear taper, vertical mount, Song Huei pots with a 6mm shaft and a notched center position sometimes called a center detent. These 9mm pots are popular in DIY guitar pedals, modular synthesizers, and other projects where space is limited. The knurled shaft features a painted indicator line so no knob is required. These tall versions have a 17mm shaft length and a total height of 25mm. For audio taper versions, see R-VSHL-AX. For standard linear taper versions, see R-VSHL-BX.
$0.95
R-VT29U-10K Trimmer - BI Technologies, Sealed, Cermet , Top Adjust, 10kΩ
High-quality BI Technologies Model 82 trimpots. These single-turn cermet trimmers are sealed ensuring a long life. They feature long leads (0.62”) making them a great choice for point to point builds in addition to PCB mounting. The simplistic design also looks great in vintage style builds.
$1.79
R-VT62P-X Trimmer - Bourns, 3362P, Single Turn, Top Adjust, PCB Mount
High-quality Bourns 3362P trimpots. These single-turn cermet trimmers can be found in countless guitar pedals and synthesizer modules. Sealed trimmers are built with an o-ring seal to prevent entrance of moisture and serve as a mechanical restraint to prevent unwanted wiper movement. ±10% tolerance.
Starting at $1.25
R-VT96Y-X Trimmer - Bourns, 3296Y, Multiturn, Top Adjust, PCB Mount
High-quality Bourns 3296Y trimpots. These sealed cermet trimmers have 25 turns for precision setting. ±10% tolerance.
$1.65
R-VTL5C1 Optocoupler - XVive, VTL5C1, Vactrol, for Channel Switching
VTL5C1 vactrols for use in amplifiers, effect pedals, synthesizers and more. The VTL5C1 was commonly used for channel switching circuits in amps made by Crate and others.
$8.40
On Backorder
R-VTL5CX Optocoupler - Xvive, Vactrol, VTL5C Series
High quality vactrols from Xvive. The Xvive vactrols are clones of the original Excelitas / Perkins-Elmer vactrols used in many effects pedals, synthesizers, compressors and other equipment. These vactrols feature a thick epoxy sealed casing. The VTL5C3 and VTL5C3/2 both have a steep slope, good dynamic range, a very low temperature coefficient of resistance, and a small light history memory.
Starting at $6.50
S-H-BANANA-X Banana Jack - Johnson Cinch, For 4mm Plugs, Panel Mount
Colors Available:
High quality banana jacks with tinned brass contacts and strong nylon housings. These jacks come in a wide variety of colors and work well with any 4mm banana plug. Cinch Johnson banana jacks are used in test equipment, audio equipment, as well as modular synthesizers such as DIY Buchla, Serge, and others. Features:
  • Formed brass contacts
  • Bright tin finish
  • Durable nylon 6/6 body
  • Nickel plated nut
  • 0.010Ω maximum contact resistance
  • Keyed mounting with two flatted sides
$1.65
S-H534 ¼" Jack - Stereo, Panel Mount, Low Profile
Panel mount stereo jacks with a very low profile. These jacks have a smaller footprint than the Lumberg jacks that are popular for tight pedal builds. They are perfect for top mounted jack pedal builds and any other project where space is limited. Mounting nut and flat washer included.
  • M9*0.75 Bushing Thread
  • Stereo 3-Conductor (TRS)
  • Open Circuit (does not have switched terminal).
  • Includes nut and washer.
$0.99
S-H750-DUST Dust Cap - For DC Power Jack, Standard Size
Dust cover for standard size DC power jacks. This cover is simple to install and can help protect the power jack on effects pedals and other electronics using this style of DC jack. Jack sold separately.
$0.35
S-H750-X Power Jack - DC Panel Mount, 5.5mm External, 2.1mm Internal
Colors Available:
½" panel mount with solder lugs. Round plastic with normally closed switch. For barrel plugs with a 5.5mm external diameter and 2.1mm internal diameter.
$0.99
S-HHN-M3 Nut - M3-0.5 Hex Nut, Stainless Steel
A threaded fastener made from austenitic stainless steels. It contains chromium creating an invisible surface film that resists oxidation making the metal corrosion resistant. If the surface layer is damaged, it rebuilds itself in the presence of oxygen.
$0.80
package of 5
S-HNFW-M3-X Washer - Flat, M3, Nylon, for Front Panels
Colors Available:
High quality nylon M3 flat washers. These durable washers fit perfectly on M3 threaded screws. The small outside diameter provides a clean look beneath the head of the screw. These are great mounting washers for preventing rack rash on front panels like Eurorack synths or any other use where the surface beneath the screw requires protection.
$0.99
package of 10
S-HNUT-38X Finishing Nut - For ⅜” Jacks and Pots, ⅜”-32 UNEF-2A
Colors Available:
High quality plated ⅜” nuts for jacks and potentiometers. These nuts are perfect for amplifier, pedal and synthesizer builds with high aesthetics or color theming. The ⅜”-32 UNEF-2A threading fits many ⅜” bushing parts such as Switchcraft ¼” jacks and CTS pots.
Starting at $0.64
package of 5
S-HS-5D5C-N Screw - M3, Nickel, Combination Head, Binding, 6mm
Combination Drive, Nickel, 6mm, M3 metric, zinc. Designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Phillips drive is the most common drive used and is designed to "camout" when the screw reaches optimum tightness, thus preventing damage to the screw head.
$1.75
package of 5
S-HS-BTN-X Screws - M3-0.5 Button-Head Socket Cap, 8mm Long
Colors Available:
Button-Head Socket Cap Screws - Class 10.9, ISO 7380 Coarse Thread. Used when a wider bearing surface or smoother, more finished appearance is desired.
Starting at $0.95
package of 5
S-HS-KN-M3 Screws - Befaco, Knurlies, Eurorack, M3
Befaco Knurlies are unique screws designed specifically for Eurorack. These M3 screws can be secured by hand, all common screwdrivers and Allen keys. These are great for saving time when rearranging your synth. Each Knurlie comes with a fitted plastic washer to prevent rack rash. Sold individually.
$0.82
S-HS-M3-6-X Screw - M3, Painted, Combination Head, Binding, 6mm
Colors Available:
Combination Drive, Colored Head Binding Screws, 6mm, M3, zinc. Designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Phillips drive is the most common drive used and is designed to "camout" when the screw reaches optimum tightness, thus preventing damage to the screw head.
$1.75
package of 5
S-HS-M3-X Screw - M3, Phillips, Pan Head, Machine
Phillips panhead machine screw, M3 metric, zinc. Designed to go through a hole or nut that is pre-tapped to form a mating thread for the screw. Phillips drive is the most common drive used and is designed to "camout" when the screw reaches optimum tightness, thus preventing damage to the screw head. See S-HS-M3-6-X for colored 6mm M3 screws.
Starting at $0.75
package of 5
S-HS-SKT-X Screws - M3-0.5 Socket Head Cap, 8mm Length
Colors Available:
Ideal for precision assembly work with close tolerances and applications needing a well tooled appearance.
Starting at $0.95
package of 5
S-HSO-M3-X Standoff - M3, Male-Female, Aluminum, 5.5mm Diameter
  • Finish/Plating: Clear Iridite
  • Material: Aluminum
  • OD: 5.5mm
  • Shape: Hex (Metric)
  • Style: M-F Standoff
  • Thread Depth(D): 8mm
  • Thread Length (TL): 8mm
  • Thread: M3
  • Type: Threaded Standoffs
Starting at $0.60
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