"Jim Lesurf" wrote in message
...
In article , Ronny
Svensson wrote:
Today I have an old Rotel 820BX3 that sounds good for an hour after
which I get tired of it (and consequently doesn't listen very much...).
After reading on the net I got the impression that both the Sugden and
300B amps are less "tireing" to listen to. I have small two way speakers
(Quad 77-10L - 84db) and I understand that the 300B likes more easy
driven speakers than this.

But I normally listens on low volume (9 o'clock) so I am hoping that the
300B will be usable for me anyway. I don't have the possibility to
listen to any of the amps so I am hoping to get some comments from
someone who has.

I'd make two points:

1) There may well be all kinds of designs that use 300B valves. The
results
probably depend a great deal upon the design details, choice of
components,
etc. Hence comments on one design may not tell you what you'd need to know
about another.

2) If you are considering low feedback and/or bandlimited designs, and/or
ones where transformer saturation may be an issue, then comments from
someone else who may have a different taste, different room, and different
speakers, may also not tell you what you'd need to know. The output
impedance, etc, of the amp would interact with the chosen speakers to get
results that will vary from one system to another. This isn't just a
question of sensitivity or rated load impedance.

I would therefore recommend that you be cautious of using any comments by
others as abasis for spending your money in this area unless you *can*
listen first.

**Perfectly and succinctly put, Jim. Excellent advice.


--
Trevor Wilson
www.rageaudio.com.au