Best Amplifier at $3000 for PSB or VA

Hi

I am unable to audition across brands especially on the combinations I would like:
Speakers are going to be either PSB Synch One or Vienna Acoustics Beethoven Grand (4 Ohm / 300 watts). I like a very highly defined sound, and very detailed delivery.

I am thinking of Krell s300i, Cambridge Audio 851 Azur.

I would like any feedback, suggestions or options for me to check out. I cant auditon a krell with a PSB or VA so I need to live off good advice.

p.s. I dont know if this is universal, but you cant seem to find the Krell s300i in the market these days. . . some China production issues. . . (by the way I am based in Singapore)