"Roger Matthews" wrote in message
...
I have a Mission amplifier but have misplaced the instruction book. I
cannot recall if it was a Cyrus 1 or a Cyrus 2 and there are not
distinguishing marks on the amplifier. Its Serial Number is 201072C
(which makes me suspect that it is the Cyrus 2 especially since I
normally buy the best system that I can afford and this was the most
expensive of the Cyrus range at the time). Can anyone advise me or
suggest where I might find out?

I see to recall that the Cyrus 2 had a connection for the external power
supply (PS/R or PS/X, or whatever they called it at the time), whereas the
Cyrus 1 didn't. That was true at some point in time, anyway - there seem to
be various generations of these amplifiers.

Andrew