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Are you a DIY'er and enjoy building your own gear? Our kits range from beginner to advanced skills, so there is something for everyone!

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P-EVJLiteIIB 18W Kit - Valve Junior Conversion Parts
Package of 20

Convert your Epiphone Valve Jr. into a Lite IIb 18 Watt amp using the "Baby Will" kit. The Baby Will is a PCB simplified version of the legendary Marshall 18 Watt 1974x circuit. The circuit laid out on a circuit board is known as the LiteIIb. It's capable of tone from clean jazz, crunchy blues, to raunchy classic rock. Crank up the volume and you'll be in AC/DC Back In Black heaven


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K-MOD101Amp Kit - MOD® Kits, MOD101 guitar amplifier

MOD 101 Guitar Amp Kit Features:



  • All Tube Design (solid-state diodes used only for full-wave rectification)
  • 60W output power into 4, 8, 16 and 20 Ω
  • 1 channel with customizable: tone stack, power tubes, negative feedback, input miller capacitance volt divider/LP filter, and preamp cathode bypass cap (all parts included)
  • Vintage channel controls: bass, treble and volume
  • Vintage pilot lamp and screw-on jewel cover for power-on indication
  • DPDT power switch circuit for instant high-voltage drain in power-off
  • Standby Switch

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K-SNUBXSnubber Kit - eliminate fuzz from amplifier

Snubber parts kit for circuits. Used to build a "snubber circuit" to remove unwanted high frequencies and high voltages resulting from output transformer ringing in a guitar amplifier, without the "brick wall" effect of using diodes.


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K-700Amp Mod Kit - MOD® Kits, Bass to Tremolo Conversion Kit

This kit adds tremolo to silverface Fender® Bassman amps such as the Bassman 70 or Bassman 100. Using the tube from the Bass Instrument channel, the circuit is modified into the classic tube tremolo circuit. The Volume and Treble knobs become the Speed and Intensity controls while the Bass knob is replaced with a jack for the footswitch. The Bright switch becomes an On/Off switch for the tremolo when not using a footswitch.


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K-701Amp Mod Kit - MOD® Kits, 6L6GC to EL34 Conversion

This kit converts a standard class A/B dual 6L6GC power amp to a dual EL34 power amp. Changing the screen grid resistors along with altering the bias circuit is required for this modification. All parts necessary to complete the conversion are included along with detailed picture instructions. A matched pair of EL34 tubes is included with the kit.


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K-702Amp Mod Kit - MOD® Kits, Tone Stack Mod

This kit converts the TMB tone stack of a blackface or silverface amp to a modern aggressive voiced tone stack. The modification is achieved by replacing capacitor and resistor values in the original tone stack. All parts required for the conversion are included in the kit along with detailed picture instructions.


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P-18WLiteIIB 18W Kit - Scratch Build Parts
Package of 22

GuitarAmplifierPCBs.com 18 Watt LiteIIb "Baby Will" Parts List for Scratch Build The Baby Will is a PCB simplified version of the legendary Marshall 18 Watt 1974x circuit. The circuit we laid out on a circuit board is known as the LiteIIb. It's capable of tone from clean jazz, crunchy blues, to raunchy classic rock. Crank up the volume and you'll be in AC/DC Back In Black heaven. The magic of the LiteIIb is its simplicity.


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K-703Amp Mod Kit - MOD® Kits, Normal to Bass Conversion

This kit converts the Normal channel of a blackface or silverface amp into the classic Bass Instrument channel from Bassman amps. This modification is achieved by altering the tone stack and works for both TMB and TB tone stacks. All parts required for the conversion are included in the kit along with detailed picture instructions.


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K-980Effects Pedal Kit - MOD® Kits, The Persuader Deluxe, Overdrive

The Persuader Deluxe utilizes a Darlington preamp to push cascaded triode vacuum tubes into distortion. Four dual triode vacuum tubes are included with each kit (JJ 5751, 12AX7B China, JJ 12AU7 and a NOS USA-made 12AT7). Swap to create a wide range of tones from just a hint of break up from the JJ 5751 to over the top crunchy distortion using the NOS US made 12AT7. A boost switch provides an additional layer of flexibility with added gain and a little extra bottom end. An LED indicator lights up when the Persuader Deluxe is engaged and not in true bypass mode. Operates on a 9V battery or AC adapter, which is not included. When completed, this pedal draws considerable current and battery life will be short. The Godlyke 9-volt adapter (M-PAS-S) may be purchased separately to power your new pedal.


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K-985Effects Pedal Kit - MOD® Kits, The Wahtz, Wah
The Wahtz Wah Pedal Kit produces the classic Wah tone you've come expect with a hint of extra bite and growl.
True bypass switching insures no loss of signal when the Wah effect is not engaged; and the long life potentiometer manufactured specifically for use in Wah pedals is included to provide years of smooth, quiet operation.
Point to point construction allows advanced kit builders to easily experiment with modifications to further tailor the tone to more individual tastes.
MOD® Kits and Assemblies are designed to give novice and experienced musicians the opportunity to build or modify their own amps, effects pedals and guitars. All kits come with easy-to-follow instructions and use point-to-point wiring. All effect pedals and amplifiers come with a pre-drilled enclosure and all necessary parts are included. All you need to provide are hand tools, a soldering iron and solder.
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