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Trevor Wilson[_3_] Trevor Wilson[_3_] is offline
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Default More than 30W per chanel Class A transistor amps

On 4/03/2019 11:21 am, Howard Stone wrote:
I've just bought a KSA 50, it was practically given away. It blew its owner's speakers and he just lost confidence with it -- I've shipped it directly to a good engineer in the UK to do a full restoration.

Anyway assuming everything works out, my plan is to feed the source directly into the power amp, with no pre. I only have one source -- a DAC (DPA Bigger Bit) which has an output of 1.96V.

If not I have two spare preamps, a Quad 34 the pre section from my Electrocompaniet ECI-2

Everyone says that I should try it with am Audio Research valve pre -- but how can this possibly be an improvement over no pre at all???


**"Everyone says"? Not me. ARC preamps are HIGHLY variable in quality.
Some models are excellent (IOW: They introduce almost no colouration
into the sound) and some are highly coloured (distorted). Many listeners
like that kind of distortion. I am not one of those listeners. The
REALLY expensive ARC preamps (REF10, et al) are very good indeed. They
are also cripplingly expensive (for me). Models like the SP7 and SP9 are
(IMO) junk.

I don't know the Electrocompaniet, so I can't comment.
I am not a fan of the Quad 34. It was a pretty uninspiring preamp.

You could use no preamp at all, providing input/output impedances are
suitable and that should provide an excellent result.

Congrats on your purchase. Be prepared to pay reasonable Bucks (or Quid)
to have it serviced. Those old guys are worth the effort.

--
Trevor Wilson
www.rageaudio.com.au

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