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Technical Blog



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Its been about three years since the initial design now, and quite a few RedRoo amps have been constructed in that time. 

All the amps that I know about have been great performers and 100% trouble-free. I had the chance to do some tests and voltage measurements on some that have had daily use, and they were all still spot-on.

After embarking on what was basically a hobby project, I've decided to put the entire design and construction details up on this website as a free download, and to offer the PC board and HV power supply module for sale. I'm also working on output transformers and a chassis kit which I hope to have available soon.

Other parts can be sourced directly from quality suppliers like  Tubes and tube sockets are available from suppliers such as or 

Digikey part numbers have been specified for components that need to match the PC Board footprint. Digikey are an excellent supplier, and have free delivery for orders over A$60.

If you need to buy all the components individually, this amplifier would probably cost around A$600 plus the chassis - not cheap, but it's a no-compromise design using top quality components. Your friends will be impressed! 

Please let us know how you go, and if you have any good ideas for improvements.




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