Arny Krueger wrote:

"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.

I had to search high and low to find much out about H-H brand equipment.
Apparently they were popular in the late 70s.

Before that in pro-audio.


I wouldn't try to generalize
very much related to just one sample of such an ancient obscure piece.

I had several. It was a classic textbook design btw. They certainly weren't
obscure over here. Everyday wokhorses in fact.

Graham