Best integrated for PSB Imagine T2's


I have an NAD C390DD all digital integrated amplifier. I am considering a big improvement in a DAC, as in a PS Audio Perfectwave DAC. This along with my Project Xtension 10 turntable/musical surroundings nova phenomena phono preamp, would give me quality analog signal inputs from all my sources. Considering an upgrade to an integrated that could better process analog to my PSB Imagine T2 speakers with a big improvement in SQ, any thoughts on an endgame amp for around 5 to 6,000?
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Thanks for the feedback. By "streamer" I meant an amp that has a decent Android control app for streaming Tidal, which is a "must". I also should have mentioned that I'm looking for a solid state amp. Any other suggestions are appreciated.
I am thinking that a good primaluna tube might be good for my analog signals from a dedicated dac (for streamer and cd transport) as well as xtension 10 turntable....matted to my PSB Imagine T2 speakers...anybody have any thoughts on going the tube route with my configuration?
@OP,

I have the T2s and have played around with SS and tube integrateds.  I can't write much right now but I'll follow up tonight.  


jbhiller....so you have experience with both ss and tube integrateds with your imagine t2's?