Amp for Focal Diablo Utopia Colour Evo

I only started getting into hifi a couple of years ago, started with a NAD integrated driving a pair of Revel m106.  I thought it sounded good until I went to a store and listened to a primaluna driving a pair of Focal Kanta No1s.  It sounded much more open than my system, so I bought the primaluna evo 400 about a year ago.  At the same, changed to streaming instead of CBS, so much more music and convenience, went with premare for the streamer preamp.  But still didn't sound very open, so got the Diablo Utopia a couple of months ago.  It made a world of difference and the system now sounds very open but I wonder if I should now upgrade the amps and the streamer
Sounds like maybe I should stick with the primaluna and upgrade the preamp and streamer instead!

oh, and I'm from Hong Kong where the shops won't let me try out the systems, can only listen to them in the store.  But it's impossible to find a store that can replicate my system at home for a test as they carry different brands.. So I pretty much have to research what I want then buy it and hope for the best.

One more thing, the houses in Hong Kong are tiny unless you're mega rich.  So I don't have a listening room and my system is in the living room which is about 300 sqft.  One major limitation I have is that my hifi components has to go on TV cabinet/desk which is only 16 inches deep (wife won't allow a hifi cabinet or changing to a deeper one), this really limits the amps that I can get to 17 inches deep..So the Pass Labs stuff won't fit

Now I better understand your situation and not being able to try it out in your system in your environment makes it difficult. I would look at upgrading your preamp/streamer if it were me as the Primaluna is a very good power amp. Or you could switch out to an Integrated, Primaluna makes several models of tube integrated(s) and they should have a similar sonic signature to your power amp which you already said you like. Good Luck

Chuck

I know this is a bit of an old thread, but I had Diablo EVO and felt it was wonderful with Luxman.  I did not care for Focal with Audio Research Ref 75 or Simaudio 700i or Boulder 565.  Also sounded good with tube pre into class A amp.