@tom23, Koji Ghafoor is a really knowledgeable guy when it comes to what audio gear is available on the market right now. I totally trust his opinions and insight. And I’m not saying that because he gave the TT2 and M Scaler positive reviews. The guy literally spends days out of every month demoing audio gear. Wish I could do that.
IMHO, the M Scaler is an absolute necessity if you’ve got either the DAVE or the TT2 because it adds so much fullness and analog character to whatever you’re listening to. But you’ve gotta go all in on using really good BNC cables and having quality LPSU’s for both the DAC and the M Scaler. Though they’re not a must have because you can get by without them, when you do the result is truly satisfying.