I find this thread interesting because I went back and forth for a long time trying to decide whether high watt solid state would be necessary for the Harbeths. While more power will not go amiss, based on the benign impedance curve and the high impedance coinciding with the Harbeths one or two severe phase angles, I went for low watt class A: Pass labs INT-25 (XA25 power amp section). The volume topic is interesting because most digital tracks sound best to me at around 35 clicks (out of 63). In this range, the amp is wonderful, with a deep and wide soundstage (also a function of the Harbeths), smooth and detailed treble, and articulate bass. I love Jazz and this setup is amazing for it.
Drawbacks: High volume listening can be a little “shouty”. I don’t think this is a function of increasing distortion, but rather a slight lack of cohesion from top to bottom where the mids and highs outpace the bass. I do this more for experiment and less for listening as it does get quite loud even though my room is on the larger side.
I agree with your latest assessment and would try to not let the gear head in you bias your choice too much. Think about what kind of listening you will be doing and go with your ears. Hope this helps.
Drawbacks: High volume listening can be a little “shouty”. I don’t think this is a function of increasing distortion, but rather a slight lack of cohesion from top to bottom where the mids and highs outpace the bass. I do this more for experiment and less for listening as it does get quite loud even though my room is on the larger side.
I agree with your latest assessment and would try to not let the gear head in you bias your choice too much. Think about what kind of listening you will be doing and go with your ears. Hope this helps.