14 Aug
2014
14 Aug
'14
3:31 p.m.
On 8/14/2014 4:17 PM, William Donzelli wrote:
They allways have been expensive.
The expense
and weight of the output transformer is not at issue with current OTL (Output
Transformer-Less) designs, but rather distortions introduced by the output transformer
through core loss, hysteresis, etc. I've seen modern designs that use a pile of
hard-to-find Russian military tubes to achieve an output impedance of about 2.5 ohms.
Yes, the distortion problem is also an issue, but I think the expense
is a bigger one. All newly made quality audio output transformers are
very expensive these days, and ones made for the low impedance tubes
are really, really, really expensive. Most transformer shops will not
even do them, as they are very difficult to make properly. Weight? Meh. Most audiophiles do not care much about
weight. Looks are
far more important.
I thought it was GOLD PRICED RCA connectors.
--
Will
Ben.