Classic Valve Design
diytube.com Budgie Phono Stage PCB
diytube.com Budgie Phono Stage PCB

Designed by Shannon Parks of diytube.com, the excellent sounding Budgie is the phono stage that we have been integrating into many of our custom builds.

1.4mm thick glass epoxy laminate, double sided with plated through holes. Board measures 152mm (6") long by 98mm (3-7/8") wide.

Comes with schematic and bill of materials, along with plans for a 12B4 line stage (not carried by us).

Design is © Shannon Parks, diytube.com. We are an authorized reseller of this design.

More documentation for this board as well as full online support (including updates, release notes and advisories) can be found here.

Note: This is an moderate skill level design, not recommended for complete newbies to the hobby.

$39.00 USD/ea.





MOSeiden RIAA Phono Stage PCB
MOSeiden RIAA Phono Stage PCB

Designed by Linnenberg-Audio, the MOSeiden phono stage is a MOSFET compound preamplifier with RIAA equalization.

1.4mm thick glass epoxy laminate, double sided with plated through holes. Board measures 141.5mm (5-9/16") long by 88mm (3-15/32") wide. Board is also designed to drop into a PAS preamp as a solid state replacement for the phonostage circuit (regulated 24VDC supply required and can be supplied by MooseFET below. See documentation).

Compliments the MooseFET line stage below for a full solid state conversion of the PAS2, 3, 3X.

Design is © Ivo Linnenberg, Linnenberg-Audio.de. We are the authorized manufacturer and reseller of this design.

Documentation for this board can be found here.

$28.50 USD/ea.





MooseFET Line Preamplifier PCB
MooseFET Line Preamplifier PCB

Our MOSFET line stage sonically resembles a single ended triode design with similar FFT frequency spectra due to the special design. A great way to have a "tubey" sound with the convenience of solid state.

1.5mm thick FR4 laminate, single sided. Board measures 148mm (5-13/16") long by 90mm (3-1/2") wide. Board is also designed to drop into a PAS preamp as a solid state replacement for the linestage circuit (tone controls not available and the addition of a 24VAC supply required. See documentation).

Compliments the MOSeiden phono stage above for a full solid state conversion of the PAS2, 3, 3X.

Documentation for this board can be found here.

$14.50 USD/ea.



Valve Heater/Filament Regulator with Soft Start PCB
Valve Heater/Filament Regulator with Soft Start PCB

Eliminate heater/filament hum and noise quickly and easily with a regulator!

Getting the rubbish out of a heater supply in a sensitive, low level audio stage, especially those with direct heating, is now simple and quick with this board. Soft start circuitry eliminates the turn-on surge with conventional DC regulation and simplifies design over a CCS heater supply.

1.6mm thick FR4 laminate, double sided with plated through holes. Board measures 97mm (3-13/16") long by 43mm (1-11/16") wide.

Documentation for this board can be found here.

$12.50 USD/ea.



Power Line Filter PCB
Power Line Filter PCB

You never know how much noise you had in your system, until it's gone!

This power line filter PCB is based on a famous commercial brand, but allows you the flexibility to customize it for your specific needs at a fraction of the price of the commercial unit and can be added to existing projects or commercial equipment with ease.

1.6mm thick FR4 laminate, single sided. Board measures 118mm (4-5/8") long by 39mm (1-1/2") wide.

Documentation for this board can be found here.

$9.00 USD/ea.





UNIAMP Driver PCB by Peter Millett
UNIAMP Driver PCB by Peter Millett

Universal Driver amp boards made from Mr. Millett's origional artwork.

1.6mm thick FR4 laminate, double sided with plated through holes.

Schematic in PDF can be found here and information on this design can be found here. Sold in pairs (required for stereo).

Design is © 2001 Peter Millett, Wheatfield Audio LLC and used in accordance with his terms found at the link above.

Note: This is an advanced design, not recommended for beginners and there is NO technical support from us for this unit!

Octal PCB Sockets for this board can be found here.

$50.00 USD/pr.
New Price - $42.00 USD/pr.





N and P channel Constant Current Source/Sink PCB
N and P channel Constant Current Source/Sink PCB

By popular request, we have created a high performcance, versatile constant current source/sink PCB based on a hybrid of bipolar and MOSFET technology for a combination of the best of both worlds.

Two circuit configurations are available on each board - simple CCS for most applications or high performance CCS for the more demanding audiophile or instrumentation application (see documentation).

The board is made of double sided 1.5mm FR4 with plated through holes. It is drilled to accept #4 screw (nylon preferred for protection against shorts) for mounting. At 56.1mm x 32.5mm (2-7/32" x 1-9/32"), it is small enough to add to many projects, or upgrade existing equipment.

Preliminary documentation for these boards can be found here.

Please specify CK-34 (N-channel sink) or CK-35 (P-channel source).

$5.00 USD/ea.



Save $2.50 with our Experimenter Set: four CCS boards (2 x N-channel and 2 x P-channel):

$17.50 USD





Gain Stage With Buffer
Gain Stage With Buffer PCB

The CK-7 PCB is a grounded cathode triode amplifier circuit, DC coupled to a cathode follower stage for low output impedance. Great for making line drivers for your projects or a line stage preamp.

The board is suitable for use with popular tubes, 12AU7/ECC82, 12AT7/ECC81, 12AX7/ECC83, 6CG7, 6FQ7, 12BH7 and many more dual triodes!

Component values not given below in the scematics, as it will vary with the tube used. These should be determined ahead of time via existing designs, simulations or breadboarding.

The board is made of single sided sided 2mm FR4. It is drilled to accept #4 screw. At 75.5mm x 50mm (3" x 2"), it's small enough to add to many projects, or upgrade existing equipment.

Schematic for the board here.

9-Pin Minature PCB Sockets for this board can be found here.

$4.50 USD/ea.





Octal + 7-Pin Experimenter PCB
Octal + 7-Pin Experimenter PCB

Octal or 7-pin minature tube experimenter PCB with pads for 2 CCS.

2.1mm thick FR4 board measures 101.5mm x 89mm (4" x 3.5"). Great for single tube line stages or a phase inverter.

Generic documentation for the past/present Experimenter PCB's is valid for this one as well and is available here.

Octal PCB Sockets for this board can be found here. Sorry, we do not stock 7-pin PCB sockets.

$8.50 USD/ea.





Octal Vacuum Tube Power Supply PCB
Octal Vacuum Tube Power Supply PCB

Very versatile power supply PCB for your tube projects!

Originally created for heavy duty musician use, we now distribute these for the hobbiest and DIY experimenter crowd.

The board is made of heavy duty 2mm glass/epoxy laminate for resistance to repeated thermal cycles.

Plated through holes are spaced to fit high voltage snap-in caps and radial leaded caps. Resistor pads will fit 1, 2, 5 and 10 watt resistors, as well as lead-out for chokes. Tube socket pads will fit most PCB mount octal sockets. Diode rectifier holes are large enough for the 3A barrel type as well as 1A mini's.

Not your regular flimsy PCB, this thing is built like a tank!

Documentation for these boards can be found here.

Octal PCB Sockets for this board can be found here.

$16.50 USD/ea.


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