Experiences of Class A solid-state ?
Ruud Broens wrote:
"Eeyore" wrote in message
: Arny Krueger wrote:
: "Eeyore" wrote
: Arny Krueger wrote:
:
: As my distortion measuring gear progressed to residuals
: in below 0.01% there was always a mixed bag of
: measurable differences. But they were arguably quite
: small, given that its often darn hard to hear distortion
: below 0.1% or so.
:
: I had a 'revalation' that blew away that idea about 30
: years ago.
:
: Do tell.
:
: I made my last try at making small amounts of nonlinear distortion audible
: about 5 years ago, and the 0.1% number was the fruit of that effort. My
: results aren't that dissimilar from those found in J. Robert Stuart
: (Meridian Audio), "Digital Audio for the Future", Audio, 3/98 pp 30-37.
: Stuart isn't exactly conservative on this topic. I know of nobody credible
: who has claimed lower thresholds for audibilty.
:
: In my case my I was comparing the H-H TPA 50 amplifier ( a fairly classic A/B
: design of its era and quite widely used in pro-audio - including the BBC )
: with ~ 0.1% THD on the spec sheet with a friend's recently assembled kit
: ampliifer using Crimson Elektrik modules. These used a rather more 'state of
: the art' design with the then new high speed Japanese output devices ( the H-H
: used Motorola darlingtons ).
:
: Lets just say the difference wasn't subtle !
:
: The H-H sounded gritty by comparison to the much smoother Crimson.
:
: Graham
:
The Crimson Elektrik modules with the quad 405 like cooling blocks
yeah, didn't they advertise in the Wireless World ?
They did indeed Rudy.
Graham
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