"Arny Krueger" wrote in message
...
"Jem Raid" wrote in message


I wonder if any manufacturer of any audio equipment has taken up the
challenge?

I doubt it. Such published DBTs that have been done were done mostly by
magazines.

I remember that John Linsley-Hood did something similar in 1969
comparing valve and transistor amps, he reported that there was very
little difference.

I wonder what he thought "was very little difference"?

Dear Arny,

Here is the 1969 article from Wireless World,
http://www.tcaas.btinternet.co.uk/jlh1969.pdf

The 'Williamson' referred to is a valve amplifier in case that isn't too
clear.

Jem