Synth & Eurorack Parts / DIY

The CD4051B analog multiplexers are digitally-controlled analog switches having low ON impedance and very low OFF leakage current.

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.

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

16mm solid shaft audio potentiometers. These pots are great for any project. 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”)
• Bushing Length: 6.5mm (0.256")
• Shaft Diameter: 6.35mm ( 0.250")
• Taper: Audio (Log)

20kΩ W taper 16mm solid shaft potentiometers with solder lug terminals. These pots are great for any project. 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”)
• Bushing Length: 6.5mm (0.256")
• Shaft Diameter: 6.35mm ( 0.250")
• Taper: W

Genuine Switchcraft ⅜” knurled nut commonly used on ¼” jacks. This nickel plated knurled nut has a ⅜”-32 threading and offers a clean look on builds using these nuts. The ⅜”-32 threading fits other hardware with matching threading such as CTS potentiometers.

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”)

High brightness 5mm LED. Great for use in pedal and amp builds as well as other applications where a bold, bright, indicator is needed. Multiple colors available.

• 5mm size
• Water clear
• High brightness
• Multiple colors available
• Package of 5

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.

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.

High quality miniature chicken head knob with set screw for smaller applications. 0.90" long nose to tail. Mini Davies 2300 clone.

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

The NJM4580D (JRC4580) is a dual opamp popularly used in many distortion pedals. This chip is a dual operational amplifier, specially designed for improving the tone control, which is most suitable for the audio application. Featuring noiseless, higher gain bandwidth, high output current and low distortion ratio, it is most suitable not only for acoustic electronic parts of audio pre-amp and active filter, but also for the industrial measurement tools. It is also suitable for the headphone amp at higher output current, and furthermore, it can be applied for the handy type set operational amplifier of general purpose in application of low voltage single supply type which is properly biased of the low voltage source. Features:

• Operating Voltage ±2V~±18V
• Low Input Noise Voltage 0.8µVrms typ.

Alpha Mini Pots with solid shaft and short PC mount terminals.

• Threading: M7 x 0.75
• Distance between terminals: 5 mm (0.197”)
• Lead Depth from Panel: 3.8 mm (0.150”)
• Lead Distance from shaft center: 12.5 mm + 3.5 mm (0.492” + 0.138”)
• Lead Thickness: 0.5 mm (0.020”)

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.

Alpha Mini Pots with solid shaft and long PC mount terminals.

• 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”)

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.

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.

PCB for converting SMD QFN-32 packages to through hole DIP-32 footprints. Solder the device to this PCB then attach pin headers (sold seperately) to connect to through hole footprints on PCBs, breadboards and IC sockets.

High quality 3.5mm (1/8") plug. Features nickel plated brass contacts, with a nickel plated zinc shell. This plug uses a crimp strain relief for use with 4 mm O.D cables.

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.

Mid-sized black plastic control knob with set screw and brass insert. This knob is similar in appearance to the classic MXR knobs but with a smaller diameter. It features a fluted grip with an indicator line along with a small skirt with a dot indicator. Fits ¼” (6.35mm) pot shafts.

CD4030B types consist of four independent Exclusive-OR gates. THe CD4030B provides the system designer with a means for direct implementation of the Exclusive-OR function. Features:

• Medium-speed operation—tPHL, tPLH = 65 ns (typ.) at VDD = 10 V, CL = 50 pF
• 100% tested for quiescent current at 20 V
• Standardized, symmetrical output characteristics
• 5-V, 10-V, and 15-V parametric ratings
• Maximum input current of 1 µA at 18 V over full package-temperature range; 100 nA at 18 V and 25°C
• Noise margin (over full package-temperature range) =
  
  • 1 V at VDD = 5 V
  • 2 V at VDD = 10 V
  • 2.5 V at VDD = 15 V
• Meets all requirements of JEDEC Tentative Standard No.

LM833 dual op amp in an 8-pin dip package. The LM833 is a dual general purpose operational amplifier designed with particular emphasis on performance in audio systems. This dual amplifier IC utilizes new circuit and processing techniques to deliver low noise, high speed and wide bandwidth without increasing external components or decreasing stability. The LM833 is internally compensated for all closed loop gains and is therefore optimized for all preamp and high level stages in PCM and HiFi systems. The LM833 is pin-for-pin compatible with industry standard dual operational amplifiers. Features

• Wide dynamic range: >140dB
• Low input noise voltage: 4.5nV/ √ ^Hz
• High slew rate: 7 V/μs (typ); 5V/μs (min)
• High gain bandwidth: 15MHz (typ); 10MHz (min)
• Wide power bandwidth: 120KHz
• Low distortion: 0.002%
• Low offset voltage: 0.3mV
• Large phase margin: 60°