Amplification for Wilson Audio Sasha on the cheap

@kunalraiker        
It's difficult to answer when you still havn't given us an approximate amount of what you consider "cheap". Your "cheap" maybe completely different to another's "cheap." What Pre-Amp are you using? This could be a limiting factor. If your Pre-Amp is not up to it, it may be pointless getting new Power Amps. Where do you reside? You have been given some good suggestions so is there a dealer/retailer nearby you can borrow some of the suggested equipment? Or is there a Wilson dealer you can audition some Amps with the Sasha's?

Thanks for trying to assist me.
Budget is $10K for new but will look for something in the 5K mark if buying secondhand.
Prefer something old and grunty.

I do not have  a Wilson dealer as Iam in Melbourne, Australia.
So no demo can be arranged.

The preamp that I use is ME14, see specs.
http://www.me-au.com/me_14_data_2.jpg

Here's a big Krell in Au. I'm sure he'll let it go cheaper, offer $5.5k.

https://www.gumtree.com.au/s-ad/como/stereo-systems/krell-fpb-300c/1123208940

Cheers George 

That one Krell FPB-300c is Class A? 

That one Krell FPB-300c is Class A?

Sort of, without the big heat penalty.
As it has what’s called sliding bias or plateau biasing (class-A), which in layman’s terms, means it monitors the input music signal and raises and lowers the class-A bias automatically of the output stage accordingly.
So there no wasted time and heat in class-A when there’s quiet passages, low volume or no music signal.

Cheers George