Using both the Balanced and Unblanced inputs

Call the manufacturer.

I have run parallel SE + BAL systems in the past, coverging at the POWER AMP. (CDP and PHONO AMP each go se to one PREAMP and bal to a 2nd PREAMP, the first PRE goes se to my POWER AMP and the other PRE goes bal to the same POWER AMP.) I always checked in first. Some said "no sweat", others said "no way". IIRC, it's a dicier move on outputs than on inputs, but I'd spend the dime on a call to be safe.

Good Luck

Marty

To be sure e-mail or call Mcintosh.

Or if you can read schematics, it's very easy to see if they are "connected in some way" as E. puts it. In the older Gordon Gow Commemorative Edition (the first MC275 with BAL inputs) the inputs were connected. So are the BAL and UNBAL inputs of the new (mono) 50th Anniversary MC75's.

However, I KNOW, both from the schematics and from actual operation, that the MC275 Mk IV has separated inputs. I also KNOW that the Mk V has the same circuit as the Mk IV (except no level controls on the UNBAL inputs.) However, since I haven't actually seen the Mk V scehmatics, or used one, I'm not going to guess ;--)

It won't hurt anything to try. A friend with a pair of the new MC75's tried it, and simply got crosstalk, which is how we found out that ITS input circuits ARE connected.

Neil
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I tried that with my Octave V70SE and with the SE everything sounded right but the balanced was distorted. I was connecting a Meridian G08 to the Octave. I was trying to compare se to xlr without having to touch the cables and having both cables connected to the same source didn't work well in my case.