Is powerfull Amps only for low sensitivity speakes?

I am running Wilson Maxx 3 speakers (91db) using D’Agostino Progression.
The learning curve was quick as I found out that volume levels were not the same as when using a borrowed pair of ARC Ref 250 SE amps.
I am amazed when listening to classical discs. The dynamics at peaks are amazing. Every note is clean and in its proper space in the recording.

It’s not about the wattage ratings of both, that’s because the D’Ago’s have far better/more current delivery into low impedance’s than the ARC could give, which will give you the full dynamic impact of transients, also giving you more "space" between the notes, the ARC would sag a little and sound a little compressed with these transients compared to the Ago’s.

Not a good impedance curve for tubes, this speakers needs current. but because it’s a very nice 90db efficient an amp around 150w or more will do, but as I say one that can deliver current!
https://www.stereophile.com/images/archivesart/909WM3fig1.jpg

Cheers George

Thanks George.

@sfroth  good point about inefficient speakers hiding noise. Another thing they hide along with that low noise is micro detail. 

Not a good impedance curve for tubes, this speakers needs current. but because it’s a very nice 90db efficient an amp around 150w or more will do, but as I say one that can deliver current!

In practice this comment does not bear out. John Giolas of Wilson Audio had our MA-1 amplifiers driving MAXXs and his system got some very nice comments from Soundstage!; so despite the apparent numbers, Wilsons have been traditionally fairly easy for tubes.

Thanks for adding that. Some of the best recollections I have ever heard Wilson speakers has been with tubes. Brooks Berdan was a friend of mine and had me listen to the big X2 Wilsons on VTL monoblocks. The other system is OBGYN's system using all Lamm gear. To be honest I was close to buying your amps when I was running Martin Logan Odyssey electrostatic speakers. I was going to sell them and buy Soundlabs using your amps! I blame Brooks totally! ;)