"Stewart Pinkerton" wrote in message
...
On 21 Dec 2005 00:50:40 -0800, "Andre Jute" wrote:

Actually, in your case it's about bull****. A clean amp is a clean amp
is a clean amp. It is always informative when you are ruminating
happily about the wonders of SET - and suddenly realise that the other
amp is the one that's actually connected!

**Funny you mention that, Stewart. A couple of years ago, I was asked to
service two, stereo, 3 Watt (PP) valve amps. Unfortunately, apart from
several buggered valves, all the electros, many of the resistors and most of
the old plastic capacitors also required replacement, it had three (out of
four) faulty output transformers. This would have put the price into the
ridiculous area. Then, I had an idea. I put a pair of small power OP amps in
each amp. I put a LF and HF filter in front of each OP amp and ran the
whole shebang off the filament supplies. I left the valves in place and told
the client that I had fixed his amp. If was in any way unhappy with the
result, I would refund his money, in full. The cost, of course, was
significantly lower than replacing all the faulty stuff. After he'd used it
for a week, he reported that his amps had never sounded so good.


--
Trevor Wilson
www.rageaudio.com.au