Two of these (Amazon) would be cheap to experiment with. If they can be used in parallel (this needs verifying by someone smarter than me — @TonyTecson?) you would have nearly the power you’re asking for.
I recently used two of the 24V versions (one per channel) in a class D build. They work fine. I added Mark Johnson’s SMPS filter to each.
I recently used two of the 24V versions (one per channel) in a class D build. They work fine. I added Mark Johnson’s SMPS filter to each.
This is what I use for TPA based amps - https://www.amazon.com/DROK-110V-220V-Converter-Adjustable-Transformer/dp/B08GFQZFC1