Bob
i have just got back from holiday and looked at this thread.
there is a guy in the UK called John Jeffries, of Metropolis Music on 0044 1892 539245 who may be able to help you.
i asked him for the input impedence of the M120 power amps, and he has put me onto the guy who designed them ! so give John a try - if you have no joy, i'll follow it up on your behalf with the designer.
i have just got back from holiday and looked at this thread.
there is a guy in the UK called John Jeffries, of Metropolis Music on 0044 1892 539245 who may be able to help you.
i asked him for the input impedence of the M120 power amps, and he has put me onto the guy who designed them ! so give John a try - if you have no joy, i'll follow it up on your behalf with the designer.