I think you followed good leads.CJ has really come intot it's won.Old stuff was just to ""tubey" to warm and noisy amps and pre's.But 17LS is great cary no question their.Have heard Pro ac and think if I were to swap one thing might be going up line in those speakers.I myselkf use EAR EL34 into a German Odeon Tosca ($6500 liist bought for much less) which is un-collored horn with 7" bass.Been thinking of many different speakers though.Overachievers at price points like gallor Reff 3's $3K) or Hyperion 938 at $4K might go into second sytem where have een thinking of alos upper end x-over less Reference 3A's etc.But I asm guy in 3 room apt who wants old schol rig,a slid state one,a modern Class D or T digital system,ubes and solid state etc.Porblem with me is I like too many things just change the weather or day of the week.But in main system might go into different amp and pre and will want to stick with other high eeficiency speakers that I have now with my 40 watts like The Silverline Sonatta.I mention because
that's a speaker, given what I have heard from buddy Pro-ac's, you might like as well as yours or more.But think you have super rig.Man those Cardas wires are great aren't they?You might eperiment with something more alive though.I have found that Cardas work great wih some tube rigs but most often with smoothing out solid state beasties (I sold krell for 6 years and they impoved many rigs that had toehr wires like XLO,MIT which we also sold.But thinkl you have great set set up as is and if a new formeat player doesen't grab you in next couple of years sending Sony to Modwright could be the one thing that keeeps same type sound just improves resolution.Nice work.
Chazz