Printed Circuit Boards for RJM Audio Projects
Download layout and schematic files. Order boards and parts.
This is the place for ordering kits, boards, and parts for various projects featured on my web site. Please send me an email (Richard Murdey, email@example.com) listing what you want, and I will send you a Paypal invoice for the total. I only accept Paypal payments. Prices are in US dollars and listed below. Shipping is free.
The parts lists and worksheets for each project are available as a spreadsheet file (Excel .xlsx) which you can download below. They normally have a pre-formatted BOM (Bill Of Materials a.k.a. a parts list) you can import directly into your shopping cart at Mouser. The spreadsheet files also has worksheets and other useful information.
You will need to download and install the free Eagle Layout Editor software to view the schematic and board layouts. You can use the .brd files to make your own boards if you want. Just two rules: don't pass them off as your own work, and don't use them for commercial gain.
I've written a construction guide for the phono stage projects, with details of the power supply and connections.
Problems? Questions? Email (address above) or check out the VSPS and Phonoclone Help Desk at diyaudio.com. As well as being a valuable general resource, there are many threads there concerning the projects featured below.
The Stereo VSPS
The original stereo VSPS is a dual-layer 5 cm x 8 cm board, and takes a dual op-amp of your choice. This is a dual-channel layout, only one board is needed for stereo.
Pricing: Board $15 / Kit $40.
VSPS 300 Dual-Mono MM Phono Stage with X-reg
The VSPS 300 is a dual-layer 10 cm x 8 cm board. This is the "high-end" version of the VSPS. It is a single channel board (two complete boards required for stereo) and features the X-reg voltage stabilizer circuit instead of 3-pin voltage regulators. It requires three single op amps of your choice. It is the same size as the Phonoclone 3 boards, below, and has the same mounting holes, to allow upgrading or swapping boards.
Pricing: Boards (set of 2) $40 / Kit $150.
Phonoclone 3 Dual-Mono MC Phono Stage with X-reg
The Phonoclone 3 is dual-layer 10 cm x 8 cm board and a drop in replacement for the earlier BE board. It is a single channel board, two complete boards are required for stereo. The X-reg voltage stabilizer circuit is used as the voltage regulator.
Pricing: Boards (set of 2) $40 / Kit $160.
Sapphire Headphone Amplifier
The Sapphire 3.0 boards are dual-layer and measure 10 cm x 8 cm. Dual mono layout, two complete boards are required for stereo.
Pricing: Boards (set of 2) $40 / Kit $130.
J-Mo Mk. II JFET-MOSFET Headphone Amplifier with MOSFET Regulator
The J-mo Mk. II amplifier and matching voltage regulator boards are dual-layer and measure 8 cm x 5 cm. Dual mono layout, two complete boards are required for stereo. The amplifier can alternatively be powered from any 15-18 V 1 A regulated power supply.
Pricing: J-Mo Mk. II Boards (set of 2) $25 / Kit $50.
Regulator Boards (set of 2) $25 / Kit $50.
X-reg Demonstration Boards
The X-reg voltage stabilizer evaluation board is double-sided board and measures 5x8 cm. It requires a dual op amp such as the NE5532. The board can be used for testing, or retrofitted to upgrade existing equipment.
Pricing: Board $15 / Kit ---.
B-board Diamond Line Buffer
The B-board circuit boards are dual-layer and measure 10 cm x 4 cm. Dual mono layout, two complete boards are required for stereo.
Pricing: Boards (set of 2) $25 / Kit $65.
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