A little help on choosing amps


Unfortunately I won't have a chance to demo, so I thought I should reach out on here.

I have the opportunity to purchase a used Pass X150.8 or Burmester 956 MK1 for roughly the same price. Which will synergize better with my system...I'm sure either will be a nice step up from a fantastic, but old, arc d120:

Fostex hpa8 dac
Arc LS 17se
Dynaudio 1.4LE

I mostly listen to minimal, drum and bass, and some rock. Bands like arctic monkeys, Zeppelin, volor flex, etc come to mind. In not a bass head but the music tends to have deep, sustained, bass lines. Im in an NYC apartment so my listening room is pretty small. Also, should I upgrade the dac in particular?

Thanks!
skanda

 ARC and Pass are a very good match. I have heard a Pass 60.8 amps with an Audio Research Ref 5 many times. The Pass 60.8 are one of the best sounding solid state amps I have heard. I am sure the  Pass X150.8 would sound very similar. 
Any thoughts on a devialet Integrated? Not to hijack my own thread but saving some space is a huge deal in NYC :)
devialet (sp?) would also be a great choice. Many owners of high end traditional gear like the pass, arc etc have switched to the new devialet integrated- excellent sounding amp section (an interesting configuration to get the best attributes of diff classes - class a and d I believe. Also includes an excellent dac and phonostage in the same case work which is very attractive. Good luck
I have decided to pass on all 3 for now...the market is a bit thin at the moment and I will reassess closer to the holiday season. Thank you all for your help.

I'll stay away from those tricky Burmesters :D