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.

Colors Available:
$1.50

High-quality USA made knobs from Rogan Corp. These medium, skirted 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.
A variety of different sizes are available from the PT Series.
- Height: 0.84 in.
- Diameter: 0.62 in.
- Fits 6mm D Shafts
- No indicator
A variety of different sizes are available from the PT Series.
$1.65

2N5088 NPN Bipolar Junction Transistor in TO-92 package
$0.20

Audio taper 16mm potentiometers with a T18 knurled shaft. These pots have 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”)
$0.99

Variety pack, 10 feet for each color. Great for color-coded wiring with smaller quantities. 600V rating. Tinned copper. See photos for detail. UL style 1015, rated to 105 degrees C. Perfect for new projects or rewiring any electrical equipment. 6 Pack (6 colors, 60 total feet) includes:
9 Pack (9 colors, 90 total feet) includes:
See S-W33 for 50 foot rolls of individual colors.
- Black
- Red
- Green
- White
- Yellow
- Blue
9 Pack (9 colors, 90 total feet) includes:
- Black
- Red
- Green
- White
- Yellow
- Blue
- Orange
- Brown
- Purple
See S-W33 for 50 foot rolls of individual colors.
Starting at $11.95

Stripboard made with a phenolic substrate. Phenolic boards are found in many vintage electronics before the use of fiberglass became common. This stripboard features a 0.15” vintage spacing. This spacing is great for vintage-style builds and more easily accommodates axial capacitors and other larger sized vintage parts like resistors and transistors. The board has a 20x10 grid (10 strips) and easily fits into 1590BB style enclosures and larger vintage-style fuzz enclosures. Each strip is gold coated making soldering easier than most protoboards and also ensures a long shelf life. Features:
- High-quality 1.6mm phenolic circuit board
- Gold coated strips
- 20 x 10 holes (10 strips)
- 3.04” x 1.55”
$2.95

OPA2134 SoundPlus™ Audio dual op-amp with low distortion, low noise and precision. The OPA2134 are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. A true FET input stage is incorporated to provide superior sound quality and speed for exceptional audio performance. This, in combination with high output drive capability and excellent DC performance, allows for use in a wide variety of demanding applications. In addition, the OPA2134 has a wide output swing, to within 1 V of the rails, allowing increased headroom and making it ideal for use in any audio circuit. The OPA2134 SoundPlus™ audio operational amplifiers are easy to use and free from phase-inversion and the overload problems often found in common FET-input operational amplifiers. They can be operated from ±2.5-V to ±18-V power supplies.
$5.40

Colors Available:
$1.85

The BC558 is a silicon general purpose PNP transistor in a TO-92 package. The BC558’s typical applications include signal processing, amplification, and switching.
$0.30

Colors Available:
$8.95

Through-hole mount crystal with a 32.768 kHz (32768 Hz) frequency. This crystal has a 12.5pF capacitance and is housed in a 3mm x 8mm package that is commonly used with Spin FV-1 chips. Features:
- 32.768 kHz Frequency
- 3x8mm Cylinder Case
- Through Hole
- 12.5pF
$0.35

The PadBoard-2 prototyping circuit board has a general purpose pad-per-hole pattern which is good for analog and digital use. It is a double-sided board with plated holes, which allows components to be soldered to either side of the board. A square pad is provided every 5th hole, which makes it easy to align components on the top and bottom of the board. Features
- Pad-per-hole prototyping board with plated-thru holes. A square pad every 5th hole makes it easy to align components on top and bottom.
- Double-sided high-quality FR4 glass-epoxy circuit board with plated holes. Components can be soldered to either side.
- 1oz/ft2 copper with an anti-tarnish coating for easy soldering. Lead free and RoHS compatible.
- 31 x 39 holes, 0.037" holes are drilled on 0.1" (2.54mm) centers. Four 0.125” mounting holes.
- Size2 = 100 x 80mm (3.94 x 3.15in), 1/16" thick (1.6mm)
$5.95