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Dominic wrote:

I know there are millions of ways to implement a digital amp, but i have no idea how easy it is to switch from one implementation to another. Or whether they sound any different. I got to thinking. Maybe a Bottlehead kit of some variety would satisfy the basic requirements of above? Which might be most promising perhaps? There are a couple heathkit models out there in the wild that go pretty cheap at least might be useful for parts? I keep trying to do an amp for me but i keep ending up not doing it.

Dominic, yes, there are millions ways to implement a digital amps and all of them wrong.

If you consider building a SET then, without being falsely humble, I do suggest to go for Melquiades (if you have right speakers and right objectives)

http://www.goodsoundclub.com/Melquiades.aspx

It is simple amp and it has very high impact result. It is possible to simplify Melquiades by do not making positive bias and ruining positive bias off the first stage's B+. It will not affect sound but it would be even less parts. It is also possible to go for first stage's and negative bias' CRC filtration instead of LCRC. It will make the Melq even further simple to make. If all parts are there then to make the amp literally is one weekend project.

The benefit is that Melquiades is well-thought, it is free, it is  tested at multiple levels (all its complexity is within and have already taken care) and it is a completed amplifier that assure results, at least as I understated the results.

If eventually you decided to go for DSET then you will own the mastership over your amp and you might easily go inot DSET by updating your Melq.

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