Projects

Do-it-yourself audio circuits and design ideas.


Phono Stages : Digital : Line Level Circuits : Amplifiers : Headphone Circuits : Cables : Power Supplies : Other


Phono Stages

The VSPS
Cheap, simple, versatile op-amp phono stage. [PCB Available!]
The Phonoclone
A current input MC phonostage based on the 47 Labs Phonocube. [PCB Available!]
6DJ8 Passive MM Phonostage
Using two 6DJ8s.
An Op-amp MM Phonostage
Passive RIAA, dual stage.

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Digital Sources

A DAC of the Klones
16-bit zero oversampling clone of the 47 Labs Progression.

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Line Level

The B-board
General purpose discrete diamond buffer. [PCB Available!]
Parallel Triodes
Design idea.

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Amplifiers

The Gainclone
Reverse engineering the 47 Labs Gaincard.
Single-Ended 6V6 Tube Amp
How I got caught up in 'homebrew'.
Firefly 300B DHSET monoblock
Design idea.

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Headphone Circuits

Sapphire
Discrete diamond buffer and op amp input stage. [PCB Available!]
Twilight
Single-ended MOSFET design revisited as a hybrid mu-follower.
Szekeres VE
The single-ended MOSFET buffer, DC coupled.
J-Mo Mk. I
JFET-MOSFET buffer. As featured at Headwize.
J-Mo Mk. II
Single-ended MOSFET amplifier. [PCB Available!]
Headclone
The Chu Moy amp revisited. Design idea.

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Cables

Digital Interconnect
75 ohm cable for SPDIF or video signal.
Mogami and Endeavour Xi Interconnects
For line level audio.
Endeavour X0, X, X2, and X3 Speaker Cable
Cat5 twisted pair. From smallest to biggest.

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Power Supplies

The X-reg Voltage Stabilizer
A high performance split supply voltage regulator for low voltage, low current circuits. [PCB Available!]
The Cap Rack!
Simple device to break in Black Gate capacitors without having to listen to them.

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Other

Data Tables
Decibel conversion, resistor color codes, wire resistance chart.

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