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otto88 28th October 2010 05:49 PM

gigaworks' F5 power amplifier kit
Anyone tried these?

"similar to F5 circuit":
pure class A F5 F-5 power amplifier Kit w/ power supply (eBay item 160489571315 end time 05-Nov-10 05:25:08 AEDST) : Electronics

Zen Mod 28th October 2010 06:01 PM

I'm sure they tossed few bucks in Papa's way , thinking about his IP ......


Chad 28th October 2010 06:16 PM

Not mention it has capacitors on the amp boards. Papa's has none. Buy boards from this site. They are the Papa blessed boards, plus helps Jason with the site cost. It those type of copies that make designers reluctant to publish their schematics for us diyers.

hags 28th October 2010 06:23 PM

It's a real shame that this goes on. Jim's Audio does boards for some Borbely stuff too. An email exchange with Erno and I quickly find out they don't have permission for his stuff either.

These boards appear to be high quality. It's too bad they don't get permission or a licensing agreement with those they rip off. They could charge a little more and people like me might actually buy them.

otto88 28th October 2010 06:24 PM

Papa blessed boards, that have capacitors in the amp circuits: is that because they will be less transparent – to distinguish them from the genuine article?

Nico Ras 28th October 2010 07:36 PM

The problem is that nothing in life is sacred any more.

hags 28th October 2010 09:47 PM


Originally Posted by Nico Ras (
The problem is that nothing in life is sacred any more.

Well, at least nothing in China.

AKSA 28th October 2010 10:14 PM

Religion is no match for IP piracy, Nico.....


hags 28th October 2010 10:57 PM


Originally Posted by AKSA (
Religion is no match for IP piracy, Nico.....


Of course not, not when there's a dollar to be made off of someone else's work.

thomasnadeau 6th November 2013 02:33 PM

I really wish DIYaudio would offer a completed F5 kit (with or without the chassis). I'd buy two ASAP. Fishing around to find the parts while ok if you have a bank of spare parts, is otherwise a PITA, especially for anyone wanting to put one together as a simple weekend project.

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