Class D Integrated Amplifier Recommendations.

NAD M23

Aavik

I have a suggestion but maybe over your price limit unless of course you find a used unit. I am using a Bel Canto E1X int. amp. It has dac, streamer, preamp, headphone amp, phonostage(mm & mc) plus 150 watts per channel into 8 ohms. It removes a lot of cables, lightweight, and uses very little electricity. Plus it comes from a company with a lot of experience in class D amps and a fine reputation. Just my opinion of course. 

you can check out apollon audio. 

I had their purifi stereo 1et400a and really enjoyed it. highly regret selling it a while back, and even contemplated buying another one again recently. however, I decided to give another amp/brand a go and pulled the trigger on a nad m23. 

I'd agree with @jimcrane in considering Wyred 4 Sound integrateds; they can probably be a bit speaker dependent but seem very clean and powerful.

I've used an STI-1000 for years and think it still a good match for a pair of Raidho D2 speakers (even if it's under-priced compared to spkrs). A too warm amp might not be as good with Raidhos.

I am very interested in Devialet and Rowland amps on the Raidhos. I used to see/hear Rowland/Raidho at shows and loved the pairing.    Many seem to love the Devialet products.    I'd love a listen before parting with too much money since the W4S satisfies me, even if I know better exists.