Or, if the mono tracks are out of phase, to any degree, you might get some loss of your high frequencies. As Newbee said, give the mono switch a flick, and YOU decide! It might help to have someone else do the "flicking", so that you can have a real A/B comparison.
Mono recording question...
..just wondering if it makes sense to listen to mono digital recordings in mono just as you would with analog recordings. If this is an incredibly stupid and obvious question my apologies, my preamp has a mono switch and I'm listening to a mono cd of some early Miles Davis in mono while reading Art Dudley's latest column on mono lp's in the new Stereophile. It was this conflux of events that got my little brain twitching. Thanks for taking pity on a poor, confused soul.