I will add Redgum Audio to the list. Directly from Australia. Made there, seven years warranty, great customer service. I think, their top of the line integrated is about $3500, they have other models. Dual volume control - what a great idea.
Rowland and YBA are excellent, but I am not sure about powerfull bass, and the Rowland is very difficult to find.
I have older Redgum RGi120 and like it a lot.
You will also need excellent interconnect and power cord.