Tube amps from Pye
Tim
It is fasinating to learn about the history of the Pye PF91 and HF25.
How about the other amps from Pye?
What do you think of the Pye Mozart EL34 SE tube amp? I heard this a
few years ago and was quite impressed by its sound.
Tim
In article <7js77u$t6m$1...@nnrp1.deja.com>,
ycta...@my-deja.com wrote:
> In article <7jr2pi$fio$1...@nnrp1.deja.com>,
> PF91 being triode connected, does sound better at the mids and highs
> compared to the HF25. The HF25 is primarily aimed at studio or
> bigger household markets. Whereas the PF91 is for hifi audio. But,
the
> interesting thing is, the HF25 is actually the more "expensive" amp
> built by PYE. It was in fact, a collaboration by PYE Audio Works Ltd
> and Cambridge University in the early 50s, it took 4 years of research
> to come up with the HF25! If you look at the circuit of HF25, it is
> just a normal ultralinear amp, but if you measure the specs and
> performance of all the transformers, especially the output, what you
see
> are transformers built to possibly, the highest grade during its
time -
> lets put Radford aside since they come in mostly in the early 60s. I
> must add that the PYE HF25 better the PX25PP/SE and DA30A in terms of
> bass. This amp truly has "musical" bass - high and low in bass! Try
> comparing Alan's HF25 with Vincent's PX25SE for bass, see whether you
> think the same. The PF91's transformers are also of execellent make
> too. PYE never made bad things! But, as I have recommended to Tim
> before, it may be worthwhile "down sizing" the ratings of the coupling
> capacitors in the HF25 (from 0.5 to 0.25). I find this gives even
> better transparency and "soothes" the sound. But, most important of
> all, use the TCC paper-in-oil! I have lots of data for the HF25
> including circuit diagrams, sales brochures etc. Anyone wants this?
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ycta...@my-deja.com
The Mozart HFS20 EL34SE is a very good amp! I have one here in fact.
The other very good PYE amp is the HF12 which is a mono integrated. I
heard it at Jason's place last year. He bypassed the pre stage and used
it purely as a power amp. Its almost like the PF91. There was in fact
a single PYE PF91 at ebay, sold for $430, price is almost the same as
what you would expect to pay in UK for a single. Strange thing about
that amp is its chassis is gold, all the PF91 i have seen have "pearl
white" chassis with blue transformer caps. If you thinking of buying
the Mozart, forget about Nick's (Emporium UK) sample, not in the best
condition. I bought my from Graham Tricker (GT Audio) last year.
Tim <tyy...@hkstar.com> wrote:
> YC,
>
> It is fasinating to learn about the history of the Pye PF91 and HF25.
> How about the other amps from Pye?
>
> What do you think of the Pye Mozart EL34 SE tube amp? I heard this a
> few years ago and was quite impressed by its sound.
>
> Tim
>
The
ho...@my-deja.com
ycta...@my-deja.com wrote:
I have lots of data for the HF25
> > > including circuit diagrams, sales brochures etc. Anyone wants this?
> >
Hi
I would like the information you mentioned about the HF25 because I am going
to buy a single one which needs restoration. Can you please contact me on my
email address: ho...@hotmail.com? Thanks.
Hon