Pedal Parts / DIY

µA741 single op amp in an 8-pin DIP package. The µA741 device is a general-purpose operational amplifier featuring offset-voltage null capability. The high common-mode input voltage range and the absence of latch-up make the amplifier ideal for voltage-follower applications. The device is short-circuit protected and the internal frequency compensation ensures stability without external components. A low-value potentiometer may be connected between the offset null inputs to null out the offset voltage. Features

• Short-Circuit Protection
• Offset-Voltage Null Capability
• Large Common-Mode and Differential Voltage Ranges
• No Frequency Compensation Required
• No Latch-Up

Reverse audio taper (antilog), vertical mount, Alpha pots with a 6.35mm shaft diameter. These 9mm pots are poplar in DIY guitar pedals, synthesizers, and other projects. Mounting nut and washer included.

The TL072 is a high speed JFET input dual operational amplifier incorporating well matched, high voltage JFET and bipolar transistors in a monolithic integrated circuit. The device features high slew rates, low input bias and offset current, and low offset voltage temperature coefficient.

The CD4040B is a 12-stage ripple-carry binary counter. All counter stages are master-slave flip-flops. The state of a counter advances one count on the negative transition of each input pulse; a high level on the RESET line resets the counter to its all zeros state. Schmitt trigger action on the input-pulse line permits unlimited rise and fall times.

2N1308 NPN germanium transistors. The 2N1308 is a popular NPN for fuzz pedals and other effects. This transistor is in a TO-39 package.

Switchcraft ¼" Mono 2-Conductor Input Jack, Isolated Make Circuit (Type 13). Includes nut and washer

1590N1 / 125B diecast enclosure finished in a hammered silver powdercoat. Equivalent to Hammond P-H1590N1. Depending on the manufacturer, this enclosure is usually very similar to a 125B.

• 4.77" x 2.58" x 1.41"
• Hammered silver powdercoat
• Die-Cast Aluminum
• Includes Box, Lid, And Screws
• Similar to Hammond P-H1590N1
• Add 0.16" to enclosure depth for lid

20 position male pin headers with a 2.54mm (0.1”) pitch. These headers use round pins that are smaller than the standard square type and are perfect for use with IC sockets, breadboards, and machine pin sockets. The breakaway construction makes fitting them to projects simple. Features:

• Round Pin
• 20 Position
• 2.54mm Spacing
• Breakaway

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

A great digital reverb sound that easily replaces a spring reverberation unit. Stereo outputs may be summed for mono operation. Simple interface: input, output, +5V, and ground

Vintage style model information label. This label has a line for a model name or number, the serial number, builder name or company, and the build date. This sticker is a great way to provide build info with a professional presentation on the chassis of a pedal or amp.

The Switchcraft Type 111X enclosed ¼” jack is a high quality mono jack. This jack has two solder lugs. One for the tip and one for the sleeve. These jacks have been widely used across the industry and can also be found in many popular 5U synthesizers. Includes nut and washer.

• Type 111X
• 0.276" bushing length (standard)
• Mates with standard ¼" plugs and is available with 0.25" inside diameter bushing.
• Mono 2-Conductor
• Includes nut and washer

See W-SC-112BX for stereo

1/4" enclosed jack, switched, with chrome ferrule and straight PCB pins, mounting nut included. Wide body and extremely durable contacts.

R/A mono jack. Replacement for Fender amps 1999-present. Similar to Fender part: 005-1658-000

1590N1 / 125B diecast enclosure finished in a hammered bronze powdercoat. Equivalent to Hammond P-H1590N1. Depending on the manufacturer, this enclosure is usually very similar to a 125B.

• 4.77" x 2.58" x 1.41"
• Hammered bronze powdercoat
• Die-Cast Aluminum
• Includes Box, Lid, And Screws
• Similar to Hammond P-H1590N1
• Add 0.16" to enclosure depth for lid.

Part of a limited run of hammered bronze enclosures which includes: Enclosure SKU 1590B P-H1590BCE-HMT-BRZ 1590N1 / 125B P-H1590N1CE-HMT-BRZ 1590BB P-H1590BBCE-HTM-BRZ YY P-H-YY-HMT-BRZ 1590J P-H1590J-HMT-BRZ

This small PCB is a simple way to add an indicator light that pulses to the rate of LFOs and clocks used in pedals, synthesizers, and other equipment. Simply connect the positive supply voltage to V+, ground to GND, and the output of a positive signal (0 to V+) such as an LFO or clock to the IN pad. The trimmer can adjust how the LED reacts to the signal. Fully clockwise it will simply pulse on and off when paired with a strong signal. If the signal is a sine, triangle, or any other non-pulse type signal, adjusting the trimmer counter clockwise can dial in settings that follow the shape of the waveform, brightening and dimming with the changing voltage. For certain dual op-amp LFOs in effect pedals, the signal may not go low enough to turn the LED fully off.

Rubber caps / switch tips for mini toggle switches in a variety of colors. These are made for short sized toggle bats. Available in 11 different colors. See P-HTCAP-X for standard-length caps.

Original Orange™ amp knob with hex set screw. Fits 6 mm diameter shaft. Black top-hat style knob with with white dot indicator.

Standard size terminal strips, 1/16" thick bakelite, tin plated steel solder lugs and brackets. 6 lugs, first and sixth lug are common.

Phenolic PCBs with similar styling to the eyelet/fiberboard used in vintage equipment. Phenolic boards are found in many vintage electronics before the use of fiberglass became common. The spacing between pads is 9.1mm horizontally and 34.4mm vertically. The two mounting holes have a 3.2mm diameter to fit M3 or 4-40 hardware and also fit the S-H190 adhesive standoffs perfectly. See P-HTB-X for 7.5mm spacing 2x8 Board:

• 2 rows of 8 eyelets (16 total)
• 9.1mm x 34.4mm eyelet spacing
• 69.42mm x 40.1mm board
• 54.6mm spacing for 3.2mm mounting holes
• Great fit for 1590P1, Gorva S90, and YY slanted enclosures

NJM4558L dual op amp from JRC in a SIP8 package. The NJM4558L is the same as the DIP NJM4558 (JRC4558) otherwise. The SIP version is a great replacement for dual op amps in vintage circuits as well as a space saving package for some PCB layouts. The NJM4558L is a dual high-gain operational amplifier with internal compensation circuit and constructed on a single silicon chip. It offers excellent characteristics by combining the parameters adjusted for a monolithic chip. The channel separation characteristic is suitable for measuring instruments. Features:

• Operating Voltage ( ±4V~±18V )
• High Voltage Gain ( 100dB typ. )
• High Input Resistance ( 5MΩ typ. )
• Bipolar Technology

See P-Q4558 for the DIP version of this chip

Cliff S4 PC-A (L Leg). Stereo input jack, metal nut, 6 pin pc mount. Low-noise Ni-Ag® Alloy Self-Cleaning Contacts for superior performance and reliability Tough, molded grade 1 black Nylon body. Supplied with a black nylon hexagonal mounting nut. Designed to receive both mono and stereo ¼" jack plugs.

High quality black plastic chickenhead knob. 1-1/4" in length. Push-on for split knurled shaft.

HS Treble Booster style circuit board made with a phenolic substrate for an even closer match to the vintage production boards. Phenolic boards are found in many vintage electronics before the use of fiberglass became common. This board is a recreation of the circuit board found in the Hornby Skewes ‘Treble Booster’ pedal. The board is styled after a version of the silicon Treble Booster but can be used for the germanium version as well. When drawing the layout, original boards were closely referenced to ensure a proper match and fit. The copper traces have a surface treatment providing protection from corrosion. This board includes a blank mounting PCB. This PCB sits directly beneath the main board to mount it directly to the enclosure using a screw. For a detailed drawing of the parts and connections originally used on this board, please see the layout drawing linked below.