You might consider a NAD C399. It uses the excellent Hypex nCore Class-D amplifier modules. I have heard amps built with them them, and they were neither polite nor harsh.
I regret I have not heard the C399 itself, but it’s available from several places with a trial period.
For a little more money, one can get it with the plug-in streaming card, which also offers processing power to run DIRAC.