Amp and Preamp recommendations for Yamaha NS5000


Currently have SOTM 200 ultra -> denafrips terminator +dsp board -> Audio gd he9 pre amp -> dual bryston 4bsst -> NS5000.
I am loving the sound... just sounds incredible. But wonder about amp and pre amp upgrades down the road. Any thoughts on what might work well? These speakers are 87 db efficient.
So far thinking all pass labs amps + pre.

Ok with buying used. Would like to keep things under $20k if I can. Thanks.
smodtactical

I hear many people saying luxman is pretty neutral but has a relaxed tone so ya  I dunno maybe. Still thinking about what direction  I should go.

A neutral amp for me is the Benchmark AHB2 and others such as SimAudio, Purifi.

 

The Luxman is nothing like these amps. It is much warmer so the frame of reference for these people saying the Luxman is neutral must be a much warmer tone.

How about Accuphase?  That was Yamaha's choice for gear at the audio shows before they came out with the 5000 separates line.