My friend replaced his reference with XL with Ultra Balanced MM and he also tried the a Balanced Ultra with XL. The Ultra MM Balanced bested both. I am running the reference with MM Balanced and it was a huge step up from my Reference XL single Ended. The real question is whether your Proceed is truely balanced, I bet the ARC is. If it is then Balanced Ultra MM would be the way to go.
Yeah MM was quiet a huge performance gain in my system!
Yeah MM was quiet a huge performance gain in my system!