To monoblock or not to monoblock McIntosh MC275's

Wondering if anyone has tried MC275’s in mono mode recently or general impressions of MC275’s in stereo mode?  Is the tube sound favorably compared to Primaluna 6 mono, 7 mono or evo series?

thanks

i've read the magazine 'stereo review' since the early 70's to their retirement. julian hersh said to increase volume by 3 decibals you need to triple your power. who is right here??

@g_nakamoto, for a given load impedance the ratio of two power levels is expressed in db by the following formula:

db = 10 x log(P1/P2)

where "log" is the base-10 logarithm.

From that it can be calculated that a 3 db increase corresponds to a doubling (not tripling) of power. Or more precisely, a doubling of power corresponds to an increase of 3.0103 db, which is usually rounded off to 3 db.

And a 3 db increase in the amount of power delivered to a speaker will result in a 3 db increase in the volume that is produced by that speaker, at a given distance, assuming that the speaker is not being driven so hard that "thermal compression" or other factors cause its behavior to become significantly non-linear.

Mr. Hirsch might also have referred at times to a commonly stated rule of thumb guideline that a **subjective** perception of "twice as loud" requires ten times as much power, which is an increase of 10 db.

I have no idea why or if he might have referred to a tripling of power.

Regards,
-- Al

My experience using the MC275 as monoblocks was that it was a little louder and a little more dynamic, but for my personal taste it wasn't worth it. While I love the tube sound, I use my system for hours at a time daily and I decided to go with SS. MC601's give my speakers a ton of power that fits more with mostly rock music that I listen too. Jazz was dreamy with the MC275 but I listen to it about 5%-10% of the time.

As for your original question about the benefits of mono blocs vs. stereo...
I found the advantages were precisely what I had hoped for... in fact they were even better than I had imagined they could be:
My experience with both tubed and SS mono blocs ( independently auditioned) was that monos consistently delivered a broader, deeper soundstage and within that stage were more tangibly located 3 dimensional performers/ instruments and the billowing sense of air and space around them. In other words... a far more realistic presentation and a pronounced step ahead in the holy grail we’re chasing: believability.
I have found this consistent with each and every brand of mono bloc amplifiers I have used including SS by Krell and Pass as well as tube amps by Conrad Johnson, VTL, and Tube Research Labs.
I find it hard to believe that “YMMV” (“Your Mileage May Vary” LOL) because the exact mentioned results have been so consistent across the board. 
Needless to say I highly recommend mono blocs whenever attainable based on my decades of experience comparing them with single stereo amplifiers. 
Happy Lissn’n