Printed Circuit Boards for RJM Audio Projects
Download layout and schematic files. Order boards and parts.
Information : Ordering : Price List : The Boards : Help and Instructions
Information
This is the information page for ordering RJM Audio kits, boards, and parts.
I sell kits, parts, and circuit boards for the Phonoclone 3 and VSPS 300 projects. The Phonoclone 3 is a Phonoclone moving coil phono stage combined with the Xreg voltage stabilizer circuit. The VSPS 300 is the regular VSPS circuit for moving magnet cartridges in dual-mono configuration and upgraded with the Xreg voltage stabilizer.
Kits, parts, and circuit boards for the Sapphire headphone amplifier and B-board diamond buffer are also available. The Sapphire amplifier combines an op amp voltage gain stage with a discrete transistor diamond buffer output stage. The B-board is a very similar circuit, but has no gain stage, being intended instead to be used as a line-driver or headphone buffer.
Payment
Payment is by Paypal. Please send me an email (Richard Murdey, rjm003.geo@yahoo.com) listing what you want, and I will reply with a Paypal invoice for the total. Prices are as listed below and include shipping worldwide.
Price List
All prices in US dollars. Shipping is included.
Kits
- Phonoclone Kit : $125 Set of two boards and components to populate, printed instructions.
- VSPS 300 Kit : $117 Set of two boards and components to populate, printed instructions.
- Sapphire Kit : $113 Set of two boards and components to populate, printed instructions.
- B-board Kit : $50 Set of two boards and components to populate, printed instructions. Available in the line-driver or headphone-driver configuration, please specify when ordering. Guinea pig discount in effect, first batch of boards offered at $25!
For all the kits, you will need to provide the chassis, connectors, mounting hardware, and the power supply. For the Sapphire kit, you also need to supply a volume control.
Boards
- 1 set VSPS 300 : $40 for a set of two boards. Photo
- 1 set Phonoclone 3 : $40 for a set of two boards. Photo
- 1 set Sapphire : $40 for a set of two boards. Photo
- 1 set B-board : $20 for a set of two boards. Guinea pig discount in effect, first batch of boards offered at $10!
VSPS 300 parts:
- C1 and C2: +$12 for a set of 8 Cornell-Dubilier 5% 1000pF mica capacitors.
- C3 : +$6 for a set of two 2.2 µF MKP metallized polypropylene capacitors.
- Electrolytics : +$18 for a set of 24 100 µF and 4 1000 µF Nichicon KW 25V audio electrolytic capacitors. This is sufficient to populate a set of two Phonoclone 3 or VSPS 300 boards.
- Op amp set for the VSPS300: +$24 for a set of 6 OPA27G (MDIP8 package) and sockets.
- Q1 and Q2: +$4 for a set of 2 BD135 and 2 BD136 transistors.
Phonoclone 3 parts:
- C1 and C2: +$12 for a set of 8 Cornell-Dubilier 5% 1000pF mica capacitors.
- C3 : +$6 for a set of two 2.2 µF MKP metallized polypropylene capacitors.
- Electrolytics : +$18 for a set of 24 100 µF and 4 1000 µF Nichicon KW 25V audio electrolytic capacitors. This is sufficient to populate a set of two Phonoclone 3 or VSPS 300 boards.
- Op amp set for the Phonoclone 3: +$32 for a set of 8 OPA27G (MDIP8 package)and sockets.
- Q1 and Q2: +$4 for a set of 2 BD135 and 2 BD136 transistors.
Sapphire parts:
Only sold as a kit right now, though I usually have a few spares if you need a replacement.
B-board parts:
Only sold as a kit right now, though I usually have a few spares if you need a replacement or want to switch configurations.
Circuit Boards
You will need to download and install the free Eagle Layout Editor software to view the schematic and board layouts. You can do whatever you like with these files except for two things: don't pass them off as your own work, and don't use them for commercial gain.
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. Not available right now.
VSPS 300
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 Xreg 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.
Phonoclone 3
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 Xreg voltage stabilizer circuit is used as the voltage regulator.
Sapphire Headphone Amplifier
The Sapphire boards are dual-layer and measure 10 cm x 8 cm. Dual mono layout, two complete boards are required for stereo. The current shipping boards are 14s1, with mounting holes in a slightly different position than the Phonoclone 3 to maintain compatibility with the prototype version. It is otherwise identical to rev. 14a.
B-board Line Driver
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.
Help and Instructions
The parts lists and worksheets for the phono stage projects are combined in a single spreadsheet file (Excel .xlsx). It features a pre-formatted BOM (Bill Of Materials a.k.a. a parts list) you can import directly into your shopping cart at Mouser. It also has worksheets for calculating the circuit gain and regulator output voltage.
Download the latest version of the combined phono stage BOM here. Sapphire BOM is here.
VSPS, Phonoclone, and Sapphire project pages.
The consolidated construction guide for the phono stage projects, with details of the power supply and connections.
Problems? Questions? Check out the VSPS and Phonoclone Help Desk and VSPS and Phonoclone Group Buys threads at diyaudio.com. There is also a help and discussion thread for the Sapphire headphone amplifier.
rjm003.geo at yahoo.com
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