Having said that, looks like audio gods are smiling upon you. Once you get your Tannoy’s, reach out to Mike Powell (NAT distributor) for in-home audition of HPS, he lives in ATL :-)
As an alternative to tubes, consider Accuphase Integrated, something like E-480 or E-650, both can be had for a good price on used market.
I do have Mike's website bookmarked, but unfortunately I live in the Dallas, TX area nowadays, so would probably be difficult to get an in-home audition with it, I'd think. Once I am ready to buy, I may discuss if he has a window of return if necessary if I decide to give that one a try. I was seriously impressed when I heard one before, but it was on Kensingtons and not Turnberry speakers, and I don't recall what phono pre they were using.
I did read somewhere that the Accuphase E650 can be a good match to the speakers, so that could be a consideration as well.
I suppose I neglected to mention some important details here in my initial post that many have touched on - notably, what I listen to and what kind of sound I like.
I typically listen to primarily Jazz music on my system, but do mix it up with some different genres here and there - like classical, folk, or soul. Primarily, Jazz is the most important genre to get right for me, though.
I used to have a Primaluna integrated a few years ago and I enjoyed how the pairing of the Primaluna and Tannoys I had at the time sounded. However, the current price of the EVO 400 in particular puts it in the price range of so many other great amplifiers, so I didn't want to jump the gun and go right for that just because it was familiar, especially if upgrading to nicer speakers.
I am using a hybrid integrated now as a band aid (vincent sv237mk) that sounds pretty good for an off the shelf, low fuss amp, but does not have nearly the soundstage that the Primaluna had, which makes a big difference in how immersive the music is for me. It kind of floats in a weird middle ground for me - warmer than *some* pure solid states I've heard, but not as warm as an all tube setup. So I don't really love it for what I listen to.
I like vocals to be clear when present, without being grating. Sometimes I've heard various amp combos that do well with vocal clarity but get a little tiring to listen to after a bit. Or, I've heard systems where the vocals can sometimes feel like they are 'behind' the band instead of in front, which can be a little strange.
