Pro Logic vs. Dolby Digital, DTS etc

My two cents - One thing all responses have forgot is that you are using the McIntosh Pre/Pro. The C-39/MX-130 decodes prologic as well or better than most. Going to a lesser expensive DD preamp will NOT necessarily provide better quality decoding. One option, if you like McIntosh (as I do) would be to sell your C39 (about $1,200) and put those funds towards the McIntosh MAC-3 OR the MDS-4 and buy the MVS-3 for your switching.

Nbt makes a good point, but since I have older C39 (not a 39-6) I understand I would lose some front panel functions using MAC3 or MVS-3. Know anything about the MX 132. Gobs of $, but if I unloaded the C39 and the Accuphase T109 Tuner maybe I could spring for the diff if this unit is really worth it. Also, I am east coast - know good MAC outlet who might have a used 132 is this is a good unit?

Prehaps you should look at a Vantas product that turnes your Pro Logic to DD. I think you can get 1 for 200-400 bucks at the most. See if you like it. It may do the trick.

Sugarbrie- my understanding is that dolby surround was first generation technology (no center channel), Pro-logic second generation (center channel carries dialog and most info, surrounds are not discrete and with limited freq. response) and DD is third generation (5 discrete, full range channels plus LFE, thus 5.1) A big step up from one generation to the next. DTS is typically considered "better" but it is evolutionary, not revolutionary. Not sure what the difference would be between a "good" prologic and a mediocre DD unit would be. Since my HT is discrete from my audio system, I have not gone hi-end for the audio aspects of that system. However, I noticed a big difference between the pro logic on my NAD to the DD on my Yamaha. Broimp, if your Mac has the right jack set, many DVD players provide DD/DTS signal decoding which could be fed to your Mac.

Swampwalker - The Mac does not have 6 inputs. Would have to buy a processor, where I understand (from Mac) that I will lose a number of front panel functions. Could maybe trade for a C-39-6, but would still need a high quality processor, then one starts to wonder if it isn't better to start with a proper Surround/Preamp, take the one time cost hit and be done with it. We do want high end audio and HT all in one place. Thanks for your input and any other thoughts you might have.