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.
Capacitor - 2000V, Ceramic Disc, ± 10%
Ceramic disc capacitors rated for up to 2kV, ± 10% tolerance.
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Transistor - BC108, TO-18 case, NPN
BC108 NPN silicon transistors. The BC108 is a popular NPN choice for fuzz pedals and other effects such as vintage silicon Fuzz Face builds and Big Muff clones. Type hFE (IC=2mA, VCE=5V) hfe (IC=2mA, VCE=5V, f=1KHz) BC108A 110-220 125-260 BC108B 200-450 240-500 BC108C 420-800 450-900
  • NPN polarity
  • Collector emitter breakdown voltage 25V
  • Collector base breakdown voltage 30V
  • Collector current 200mA
  • Power 0.75W
  • Transition frequency 150MHz
  • TO-18 case
  • Weight 0.35g
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Knob - Scalloped Edge, Indicator Line, Set Screw, Brass Insert
Colors Available:
The P-K801-BRASS is a custom built Davies 1900H clone. This knob features a brass insert in addition to a thick plastic build resulting in the most solid version of this knob available. The thick plastic eliminates the unfortunate hairline fractures that can commonly be found near the set screw of other versions. The P-K801-BRASS has an infilled painted indicator and fits ¼” (6.35mm) pot shafts.
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Knob - Davies, 1470, Daka-ware, Large, Pointer
Colors Available:
High-quality USA made knobs from Davies Molding. The large 1470 pointer knob is made of solid phenolic and features a fine ridged grip with a distinctive point. This classic knob has been used on a variety of guitar pedals such as the Klon and countless EHX effects.
  • Height: 0.50 in.
  • Length: 1.13 in.
  • Fits ¼" shaft with set screw
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Capacitor - 25V, Radial Lead, Electrolytic
High quality, radial leaded, aluminum electrolytic capacitors rated at 25VDC.
package of 5
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Switch - GØRVA, Mini Toggle, SPDT, 2 Position, Solder Lugs, Medium Bat
Premium two position SPDT mini toggle switches from Gorva Design. The Bascular Mini switches have a medium 7.5mm actuator length. These switches feature silver plated copper contacts. RoHS compliant & lead-free. Mounting hardware included. Details
  • 8.89 mm bushing length
  • Medium bat
  • 2-Position On/On
  • ¼" mounting hole diameter
  • Single pole/Double throw (SPDT)
  • Solder lugs

Features:
  • Power Rating: DC9V, 1A
  • Contact Resistance: <10mΩ
  • Insulation Resistance: 1000MΩ Minimum
  • Dielectric Strength: 1000V RMS @ Sea Level
  • Operating Temperature: -40°C ~ +85°C
  • Electrical Life: 40,000 Cycles
  • RoHS & Lead-free
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Transistor - BC183, General Purpose, TO-92 case, NPN, Gain Sorted
The BC183 is a general purpose NPN transistor in a TO-92 case. The BC183 is commonly used in fuzz pedals and has a reputation as a warm sounding silicon transistor for fuzz. The BC183 is available in three different gain ranges: BC183A, BC183B, and BC183C. Type hfe (IC=2mA, VCE=5V, f=1KHz) BC183A 125-260 BC183B 240-500 BC183C 450-900
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Knob - Plastic, Set Screw, Vertical Line, 0.525" Diameter
Colors Available:
Small plastic control knob with set screw and brass insert. This knob features a radial-brushed metal top and a stylish vertical knurl. The style is similar to the Boss middle knobs used on many pedals. Fits ¼” (6.35mm) pot shafts.
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Knob - Mini Indicator, Set Screw, 15mm x 11mm
Colors Available:
Mini fluted knob with infilled indicator line. Pairs well with the larger P-K850X. Fits ¼” (6.35mm) pot shafts.
  • Height: 11mm
  • Diameter: 15mm
  • Fits 1/4" shaft with set screw
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Potentiometer - Alpha, Reverse Audio, Solid Shaft, Right Angle, 16mm
Reverse audio taper Alpha 16mm pots with a solid shaft and right angle PCB mount terminals. The smaller size is useful for builds with limited panel space such as guitar pedals, synthesizer modules, and adding modifications to equipment. Washer and nut included.
  • Threading: M7 x 0.75
  • Distance between terminals: 5 mm (0.197”)
  • Lead Depth from Panel: 10.7 mm + 5 mm (0.421” + 0.197”)
  • Lead Distance from shaft center: 16 mm (0.630”)
  • Lead Thickness: 0.5 mm (0.020”)
  • Shaft Diameter: 6.35 mm (0.25”)
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Switch - Carling, Mini Toggle, SPDT, 2-Position, PC Pins
Carling mini-toggle switch, SPDT, PC Pins. 2-Position.
  • 0.354" bushing length
  • 2-Position On/On
  • ¼" mounting hole diameter
  • Single pole/Double throw (SPDT)
  • PC mount pins
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Knob - Plastic, Set Screw, Boss Style, 0.63” Diameter
Colors Available:
Plastic control knob with set screw and brass insert. This skirted knob is similar in style to the knobs found on many Boss pedals. It features a fluted grip with a radial-brushed metal top. The indicator line extends from the top of the down down through the bottom of the skirt. Fits ¼” (6.35mm) pot shafts.
See P-K370X for a skirted version.
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Wire - Bus, 20 AWG, Tinned Copper
Solid tinned copper bus wire. Great for point to point builds, guitar electronics wiring, or any situation where insulated wire is not required. 105°C temperature rating, 600V. Sold by the foot. For 100ft spools, please see S-W428X.
Sold by the foot
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Diode - 1N60, Germanium, Striped Clear Glass, DO-7
1N60 point-contact germanium diodes in a DO-7 package with striped clear glass. 1N60 diodes were used in many vintage electronics and also make for great clipping diodes in stompbox effects pedals.
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Knob - Plastic, Set Screw, Pinched w/ Line, 0.630" Diameter
Colors Available:
Small plastic control knob with set screw and metal insert. This knob has a pinched grip similar to the Davies 1510 but features a smaller diameter and scooped cutout for a distinctive appearance. Fits ¼” (6.35mm) pot shafts.
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Transistor - BC184, General Purpose, TO-92 case, NPN
The BC184 is a general purpose NPN transistor in a TO-92 case. The BC184 is commonly used in fuzz pedals and has a reputation as a warm sounding silicon transistor for fuzz. BC184 was used in various Colorsound pedals - Jumbo Tone Bender, Supa Tone Bender, Power Boost, etc. It was also used in the Schaller Fuzz, and has been used in fuzz pedals from well-known builders such as Skreddy Pedals, D*A*M, and Stu Castledine.
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Knob - Plastic, Set Screw, Skirted w/ Top Line, 0.87" Diameter
Black plastic control knob with set screw and brass insert. The grip has a thick vertical knurl with an indicator line on a raised top. This skirted knob is a close match to the knobs used on some late 1960s Fuzz Face® pedals as well as the Eric Johnson signature model. Fits ¼” (6.35mm) pot shafts.
  • Height: 0.77 in.
  • Diameter: 0.87 in.
  • Fits ¼" shaft with set screw
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Diode - 1N914, Small Signal
The 1N914 is a small signal diode similar to the 1N4148 and is common in many older electronics. The 1N914 is general purpose and can be used in a multitude of different applications.
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Knob - Davies, 1400, Daka-ware, Small, Pointer
Colors Available:
High-quality USA made knobs from Davies Molding. The small 1400 pointer knob is made of solid phenolic and features a fine ridged grip with a distinctive point. This classic knob has been used on a variety of guitar pedals and audio equipment such as the Pultec EQP-1A.
  • Height: 0.38 in.
  • Length: 0.84 in.
  • Fits ¼" shaft with set screw
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Diode - small signal fast switching, 1N4148A
A semiconductor device which passes current in the forward direction(from anode to cathode), and blocks current in the opposite direction. For extreme fast switches.
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LED Lens - Fresnel, Polycarbonate, 5mm
Colors Available:
Panel mount led lenses made of high quality polycarbonate. These lenses provide a clean semi-flush appearance with a small panel footprint and work well in any project using LED indicators. Features:
  • ¼” mounting hole
  • For panel thicknesses of 1/16” to ⅛”
  • Fresnel lens
  • Low Profile

For a version that fits 3mm LEDs, see P-L310-X.
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Nut - Mod® "Top Brass", for Qingpu and other 3.5mm jacks
Mod® "Top Brass" nuts are the easiest way to upgrade your Eurorack module or other 3.5 mm application to a more regal look - we call it "Top Brass". Designed with the same outer dimensions as Qingpu knurled nuts, these round brass nuts will fit any module using Qingpu or other similar metal-bushing jacks without covering up the jack labels. As their name implies, the Mod® "Top Brass" nuts are made out of pure brass, and while they look incredible on their own, their appearance also pairs extremely well with the immersion gold used on Make Noise and other similar modules. Rather than being knurled, Top Brass nuts have a smooth outer edge for a clean look. The nuts are slotted and will work with all existing nut drivers intended for use with the knurled Qingpu-style nuts. "Top Brass" nuts use M6x0.5 threading which matches the bushing on the ubiquitous Qingpu jacks and many of their copies.
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Knob - Plastic, Set Screw, Neve / Marconi Style, Wing, Skirted, 1” Diameter
Colors Available:
Plastic wing knobs with set screws and brass insert. These knobs are a close match for the classic knobs used on Marconi radios and Neve consoles. They feature an inlay indicator line. The grip diameter is 0.693 inches with a 1 inch clear skirt. Fits ¼” (6.35mm) pot shafts.
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Knob - Rogan, PT Series, 1PS, Small, Skirted, Pointer, D-Shaft
High-quality USA made knobs from Rogan Corp. These small, skirted pointer knobs from Rogan’s PT Series feature a soft rubber grip molded over a solid polymer knob. PT Series knobs can be found on synthesizer modules from Make Noise, Mutable Instruments and others. Fits 6mm D-shafts.
  • Height: 0.71 in.
  • Diameter:0.57 in.
  • Fits 6mm D Shafts
  • Indicator on round side of D-shaft

For a T18 knurled version of this knob, see P-K271PS-W. A variety of different sizes are available from the PT Series.
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