True but I think the increase is about £600 on a single chassis amp.
Then his initial pricing was unrealistic & naive.
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I didn’t mean to say it wasn’t a fair price. Its still eye watering vs diy.
this rebuilt ST20 would do a nice job with the Direkts
See the posts in the DIY thread last September.
I’ve been using it since then on my horns & it sounds very nice.
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Pretty much what my amp is now. I’ll have to give the pre and power another go. Perhaps I’m barking up the wrong tree and dismissed them too quickly. Or I just wanted something different in the system? (I know that’s unheard of in the AA 
).
I have one of these I could sell you. Probably misses every requirement in your list (except it’ll be well south of £1000).
https://www.hifiengine.com/manual_library/hh-electronic/s500-d.shtml
It might not be - four EL84s, yes, but the Stereo 20 was unusual in only using ECC83s in the small-signal stages (even its sister mono amp, the TL/12 Plus, used an EF86). It also has quite a bit of feedback, giving it a decently low output impedance. And the ultralinear tapping point on the later models (which is most of them) was also unusual at 25%. They are extraordinary amps in the true sense of the word.
I’ll need to dig out the specs on mine when I get a chance and check
Funnily enough I was looking at HH stuff earlier
its been refurbed by Carl in blackpool and it was very reliable for me. It is a tad heavy and awkward to ship though. PM me if you’d like to sort something out. I don’t need it anymore so I’d be happy to sell it.
Thanks Paul. Let me have a think about it and I’ll get back to you
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ECC83 does get a mention, but so does ECC82 and, more dramatically, “Class A/B triode” EL34s. The EL34 is quite a different beast from the EL84. There’s also talk of a solid-state rectifier.
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Sadly, Graeme, it’s all Greek to me.
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Long story short - Guy’s amp and your amp have different valves in, so aren’t really pretty much the same (pace Peter Walker 
).
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Still thinking of a pass?
Pass Labs XA30.5
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How much gain does the saphire have? I’ve got 2x First Watt F4 and I’m going to sell one of them
I think it has enough, some random who made one in a DIY audio thread was complaining that its 16dB was too much. That should be ok with an F4.
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Buy it Spence, that’s a fantastic amp for not a lot of money relatively speaking.
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I use the XA100.5 monos. That is a superb amp for a decent price. I’ld happily use one if I weren’t spoiled.
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