Understanding Amplifier power/ratings

[Enkay78]

Funnily all the audiophile active speakers - are class D.
The JBL reference powered monitors like 708P - again class D

JBL Professional 708P

8" Bi-Amplified Master Reference Monitor JBL 708P is the self-powered reference monitor for crit...

jblpro.com

So what are the sonic quality limit we are talking about, if class D are used for reference studio mixing ?

 

[bluestar]

This you tube video is from another thread 'Interesting Nelson pass article' and posed by member sound1

please go to 22.07; The exact question is asked of bob carver - why do tube 50watts sound so different from solid state 50w

 

[Rosenarayanappa]

FOr the price its great ! and completely objectively it also sounds quite good with a def tuby sound and is quite forward. Seems to have enough power to run any speaker I throw at it.

Haven't had a chance to do an A/B with another tube and hardly spent any time with tubes otherwise so don't have a lot to compare it too. I can't tell if the downsides when compared with modern class ab and d is something to do with these tubes specifically or tubes in general. Don't have the 'depth' of some of the more modern sound, otherwise would recommend to anyone looking to dip their toes or for a second tuby sounding system.

How does it compare to Lyrita GM70?