The diyAudio Store - DIY amplifier kits, chassis, and parts

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Hard-to-find parts and unique projects for DIYers you won't find anywhere else

WHAMMY is back in stock, with new build guide!

August 19, 2025

The ever-popular WHAMMY headphone amplifier is now back in stock, and complete with a brand new build guide to help you along your way. Check it out! New WHAMMY build...

New Backorder and Preorder System

July 25, 2025

In order to keep you best notified of when products will be back in stock, a new backorder system has been implemented. As quickly as an in-stock date is available...

Featured Projects

WHAMMY

From $ 20.00 USD

Zenductor II BAF Edition

F5M

From $ 30.00 USD

Aleph Jzm

Both chassis styles (silver and black), the PSU and the parts kit. Please note only 1 chassis is included in the complete kit, you must choose which style you prefer.

Both chassis styles (silver and black), the PSU and the parts kit. Please note only 1 chassis is included in the complete kit, you must choose which style you prefer.

This is what you will receive if you order the complete kit and choose the silver faceplate option with a power switch cutout

Amp Camp Amp

From $ 10.00 USD

Both chassis styles (silver and black), the PSU and the parts kit. Please note only 1 chassis is included in the complete kit, you must choose which style you prefer.

DIY Biamp 6-24 Crossover

Nelson's PSU Filter Relay 2022

Pearl 3 Phono Preamplifier

Iron Pre

From $ 100.00 USD

+1

ACP+ Amp Camp Preamp & HPA

From $ 20.00 USD

Korg Nutube B1 Preamplifier

From $ 30.00 USD

BA2018 Linestage

From $ 19.00 USD

Project Categories

Preamplifiers / Buffers / Phono Stages / Input Stages

Preamplifiers / Buffers / Phono Stages / Input Stages ¹¹

Power Amplifiers / Output Stages

Power Amplifiers / Output Stages ¹⁴

Headphone Amplifiers

Headphone Amplifiers ⁵

Crossovers / Equalizers ³

Power Supplies ¹⁰

Auxiliary Circuits / Experimental Platforms ⁴

Latest Projects

Zenductor II BAF Edition

Amp Camp Amp Mini

From $ 25.00 USD

Aleph Jzm

ACA MinMax

F5M

From $ 30.00 USD

Elekit TU-8150 6AQ5/6V6 Single Tube Amp/HPA Kit

Pearl 3 Phono Preamplifier

ACP+ Amp Camp Preamp & HPA

From $ 20.00 USD

DIY Front End 2022 Essentials Kit

Korg Nutube B1 Preamplifier

From $ 30.00 USD

An assembled PCB

An assembled PCB

Front view (knobs and switch are examples)

Noir Preamplifier & HPA

From $ 25.00 USD

An assembled PCB

PCB top

BA2018 Linestage

From $ 19.00 USD

ACP+ Amp Camp Preamp & HPA

From $ 20.00 USD

An assembled PCB

An assembled PCB

Front view (knobs and switch are examples)

Noir Preamplifier & HPA

From $ 25.00 USD

An assembled PCB

PCB top

Starving Student II HPA Complete Kit

Starving Student II

Elekit TU-8150 6AQ5/6V6 Single Tube Amp/HPA Kit

WHAMMY

From $ 20.00 USD

Equalizer for Full Range Speakers

DIY Biamp 6-24 Crossover

Analog Crossover Network (LX Mini Crossover)

From $ 33.00 USD

Nelson's PSU Filter Relay 2022

Nelson's Bipolar Power Supply

Nelson's Bipolar Power Supply

Nelson's Bipolar Power Supply

From $ 60.00 USD

SMPS DC Filter P089ZB Kit

Meanwell 36V power supply and power cord

Meanwell 36V power supply and power cord

Meanwell 36V power supply and power cord

Meanwell 36V power supply and power cord

Linear Audio T-reg V5

Linear Audio High-voltage Delay for Tube Amplifiers V4