Well..... I figured I'd get an external LPS for the Rdac since I have one for my MCTH.
With the MCTH the results of an external linear power supply resulted in a completely different amplifier. It was pretty mind blowing how much better the amp was across the board. Especially in noise floor and bass slam.
The power supply purchased was an Acopian A28MT500 for the MCTH.
So I picked up an Acopian VA5MT510 on ebay for a little under $60 shipped new in the box. Both of these supplies retail for $300+ each on the Acopian website.
The results with the Rdac are on par with the results of the MCTH. I'm completely blown away again. I thought the background black before. It's ridiculously black now. Everything has become more expansive in sound stage, especially in depth.
Much more precision in imaging, and so much more texture in the notes. Bass has more impact and slam, with better extension.
Everything just sounds more real lol.
I really haven't seen many people do this with the Rdac. If anyone is interested in giving it a go. Here's where I bought mine. He'll accept $40 on the offer button.
https://www.ebay.com/itm/272627087024
Cheers!