The Ultra technically can sound similarly powerful to the Rev 1 when I AB’ed them and certainly can be way tighter and more modern, but the core tone itself (no matter how you dial it in) had this inherent really filtered, cardboard-y, synthetic, sterile quality to the sound and feel that I hated and despite being actually tighter the Rev 1 still tracked notes better on very fast passages in much the same way like when I AB’ed a mark 7 vs a real iic+
I didn’t like the last Rev 2 I tried nearly as much as the Rev 1’s, but they vary a lot from what guys tells me and the Rev 1’s I’ve had and played certainly varied (physically under the hood too), but still all were great of what I’ve played, but different