Topping are one of the manufacturers of Tripath amps.
There are numerous brands. Have a look on Ebay, Amazon or Ali Express.
I have one that is branded as “Sure” I use it for my bathroom ceiling speakers and it’s fine but not the best set up to judge “performance”. No noise or hissing but I think the speakers would be the weakest link in that chain.
If you want a bargain on Ebay, sort by distance from you and look for amps that are for “Collection Only”, generally go a lot less as there is much less competition.
If you don’t mind about quality have a look for an old AV receiver, there a loads of old 5.1 and stuff without HDMI inputs going for peanuts, expically if collection only. You could pick up an old Arcam AVR 100 and have a good stereo music amp as well.