"Serge Auckland" wrote in
message
"Arny Krueger" wrote in message
...

Yes, the OP said that he was told that he had
two amps from the same maker that had the same gain.
When we looked at the relevant facts, we found that
someone had been telling him audio fairy stories. The
amps don't have matched gain, no matter what he was
told.

The OP was told, apparantly erroneously, by QUAD that the
amps had the same gain. Consequently, they could be used
for bi-amping. However, it turns out that the amps don't
have the same gain, but the same sensitivity for full
power, consequently they can't be used for bi-amping
unless the more sensitive (606) is padded down to match
the less sensitive (405).

Agreed. What we were possibly seeing here was a stimulus for the creation
apparent support for yet another audio myth - the myth of passive
biamplification. Had the OP fallen for the erroneous advice he received, he
would have probably heard a difference due to the difference in the
amplifier gains.

Fortunately a little fact-checking nipped the potential damage done by the
erroneoua advice in the bud.