best sub $1000 amp to mate with tube preamp


needing some power for inefficient two ways. thinking parasound halo a23 right now. recommendations welcome.
djwilbourn
Do a Bryston 4B-ST for $1,100 or so. They are very well made and sound better than most amps at that price point. In addition, you'll easily be able to resell a Bryston should you need to due to the twenty-year transferrible warranty (perhaps even at a profit). I had a friend who ran one on Aerial 5's (small monitors) and it sounded superb.
I have really been enjoying my ARC SP-9MKII/PS Audio HCA-2 combination. You could contact PS Audio to inquire about the impedence match with your pre.