"Dave Plowman (News)" wrote:

In article ,
Eeyore wrote:
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.

Agreed - they were never much good. The later MOSFET sounded better.

Unquestionably so but it's tricky to make a truly bad amp with those Hitachi
devices. I have seen it done though. A piece of disco **** going by the
brand name of Lyonforge.

Graham