Bob the Tech found that the issue with this MA9000 was simply a missing connection.

McIntosh MA9000 with One Channel Out

I got a laugh recently when this McIntosh MA9000 came in for service with one channel out. The complaint was that the left channel was not working. The issue? A missing jumper on the rear panel …

We wish all service issues were this simple, but unfortunately sometimes that’s not the case. For your fine audio service needs, reach out to us via our service-request.