FWIW, I have owned both the Pass XA25 (two of them) and the Coda No.8 (V1). In my system the Coda was wholly superior to the XA25, especially in dynamic capability.
However, that said, I ultimately preferred the original Parasound A21 (not Plus which is actually inferior) to both of those amps. The Coda manages a little more detail and refinement than the A21, but the latter manages to drive my mid-efficiency speakers more effortlessly. There is level of dynamic ease and breadth to the A21 that I couldn’t get from the Coda. I did reach out to Doug about having the No.8 boosted to a V2 or V3 for the higher wattage (apparently the V1 outputs the most current of them), but he didn’t think I’d notice a difference unless my speakers were an 8-ohm nominal load. So I sold the Coda and bought an original Parasound A21 for the second time. I’ve been very pleased with the decision, especially when I am powering my Magnepan .7s.
My main speakers are Philharmonic BMR Towers and my front end is the Eversolo DMP-A8 streamer. The Eversolo helps to make up for the lack of treble energy the Parasound otherwise has with less transparent preamps/streamers. I consider myself a picky listener, yet I am very pleased with the synergy of this combo.
P.S. I felt the Pass and Coda also leaned warm, so they too benefit from a very transparent front end.
If decay is what you’re seeking and didn’t feel the Coda you auditioned managed enough decay, you might want to consider the Yamaha M-5000. It’s capable of exceptional decay IME, which I believe is largely attributable to its MOSFET transistors.