Thoughts on Tube vs SS amplification for Sony SS AR1s


Hi all~
Was hoping someone with more knowledge than me may be able to help clear up some confusion I’ve been having.
I recently was able to acquire my ‘unicorn’ speakers, the SS AR1s.  4 ohms, 88 dB, 28hz-60khz.
i have an integrated tube amp, the  Luxman LX-380, which on paper doesnt seem to deliver a lot of power for these speakers (14 w into 4 ohms), but i have been really surprised by how full/robust everything sounds with the Luxman in place. I had been advised that a more powerful SS amp (‘at least 200 w per channel!’)  would be needed to get the most out of the SS AR1s (and i have had a lot of SS amps in the past), but To be honest I’m pretty impressed with how it sounds already - So,  i was just hoping someone with more experience here could weigh in? Is it necessarily true that tubes just aren’t a good match for a speaker of this sensitivity? Would a more powerful amp like the luxman mQ-88uc (25 w into 4 ohms) be worth looking into? Would a powerful SS amp really make these speaker sing (and i just dont know what I’m missing)? I want to take advantage of the low-end of these new speakers (which is the main difference from my previous pair), so looking for some guidance re tube amps and exerting control over speakers like these.

thanks much!
sfmorris

Showing 2 responses by ddude003

I have seen this same phenomena play out with electrostats... Where most Solid State amps that double down/up on watts vs ohms just don’t sound very good while reasonably decent tubed amps, with much lower watts, sound wonderful... Excellent Transformers seem pretty rare in modern SS amps... I suspect there is a correlation between transistors and transformers and speaker impedance most SS amps just don’t play well with... Makes me wonder how bad a Class D amp would sound with these speakers...
sfmorris,

I suspect the orthodox SS amp manufactures think the way to manage or handle "difficult loads" are to double the watts to drive the speakers into submission, when not all speakers have the same impedance curves, much to the chagrin of those manufactures... In my own experience, tubed amps and ss amps with autoformers seem to do better at managing those "difficult loads"... To be more clear, not all speakers present the same impedance loads/curves to amps as some manufactures would like or expect...  What happens when you double the watts at the wrong end of the curve?