Mcintosh 452 vs Pass Labs XA 30.5

So you bought a brand new 452 for $4500. And the dealer shipped it to you, which is goes against McIntosh policy/dealer agreement. 
I would question the dealer as to why they shipped the unit when they know this isn’t allowed. And you bought the amp for about 50% off retail. Sure it was new?
i have owned many Pass amps. I agree that they are an awesome company with excellent customer support 

“They are an easy load, they are just not efficient 80.7db, which means they need watts rather current when played loud.”

Not looking for an argument but whatever wording you want to choose your advice was not appropriate. I know those speakers and 30wpc, class A or otherwise, will not be a good match to get the best sound out of them, even in a moderate size room. They’ll sound okay but nowhere near what they’re capable of. 

tlong1958..No I bought a MC402 back when it was the latest offering..Pretty sure it was 4500 ,maybe 5500,I don't remember what it was but I paid retail plus about $150 to ship it UPS...the 452 I bought much later used and dirt cheap only to flip for profit, which I did.I would never have Mac in my system after the 402 disaster.So I battled the factory and the dealer at that time and the only thing I was promised was from the dealer that if I ever had a problem contact them.I did wait long enough and sold that amp..but my story is true.

“On these fairly easy to drive speakers, both will work fine...”

Totem Mani2 speakers are actually not an easy load

I beg to differ, you quoted me.
They are an easy load for an amp, just not efficient so you need watts. 

Not looking for an argument but whatever wording you want to choose your advice was not appropriate.

But you are, then don't quote me and then try to "cover" your inability to distinguish "bad load for a speaker" with "inefficiency of a speaker".
A speaker with bad load impedance for an amp, with one that's just "inefficient", which in this case the Mani2's are, just inefficient and NOT a difficult impedance "load" for an amp.

mizioa

The  30watt Pass to me will sound the best to a given volume level, but the 450w Mac will go louder. This volume level has nothing to do with the "load" the speakers presents, but the "efficiency", to which will give the higher volume level. As far as me saying the Pass will sound better to a given volume, that's because it's a Pass, and the Mac? well is a Mac, (a solid state with output transformers?????) bizarre!


Cheers George   
     

@missioncoonery not doubting you. I haven’t had any issues with any of the 3 McIntosh units I have, but if I do I will let my dealer handle it. Hopefully I won’t get yanked.
ARC has really good customer service too, and you’re probably going to need it because it will blow up expensively