When using the XLR MAIN OUTS to the amps, I can only get the left channel. When using RCAs on the MAIN OUTS I only get the right channel. I tried doing a master reset and swapping out the tubes but no go. Odd.

Do both meters move? Where is the balance set?

Thanks,
Ron-C

Both needles move and balance is set to 0.

Then the preamp is working since the meters monitor the output. Look for cable tr try a different set of output jacks, the 2200 has six.

Thanks,
Ron-C

Tried all 3 XLR outputs and same thing - left channel only. Then I tried all 3 RCA outs and only the right channel comes through. Meters are in sync. Could this be a software issue?

I had a similar issue with my C2200. When I switched to mono I had audio in both channels. Stero only one channel.

I would have it checked by a warranty station since it sounds like you have a dead side on the output board.

Thanks,
Ron-C

I had a similar issue with my C-46. left chanel would intermitedly switch off. mono button like Dashley would engage both chanels.

Took it to a so called authourised repair twice and they found nothing wrong. Finally sent it to the Aussie distributor and they found the fault - faulty reed relay K45.

Make sure you take it somewhere where McIntosh have have trained them.

Interesting that both C-46 and C2200 have similar issues - hmmmm

Yes my fault was a relay as well. DOn't recall the K location. Two weeks past the warranty period, and Mcintosh would not slip it through. That was a bummer.