Here is my impression of the Coda S5.5 amp:
System is:
Quboz->Innuos Pulse streamer->Holo May KTE DAC->Supratek Signature Grange preamp->Coda S5.5->Silversmith Fidelium speaker cable->Coincident Super Victory III speakers (92.5dB/8 ohm load)
To keep things simple, I will leave out all the glory details of my turntable/arm/cart, other cables, tweaks, room treatments, power conditioner etc...
Comparison between Pass XA30.8 & Coda S5.5 - I simply changed the Coda amp for the comparison, keeping everything the same:
1. Speed - Coda is the winner, hands down.
2. Highs - Coda is the winner, by a good margin. More airy and open than Pass.
3. Midrange - Coda edges out Pass.
4. Bass - Coda is equal to Pass (The Coda has been playing around 40 hours or so and prior to getting the Coda, I had to change the rectifier tubes in my preamp. I bought the cheapest rectifier tubes I could find). Maybe with further run-in and changing the rectifier tube of better quality, Coda bass would be better?
5. Micro Detail Retrieval - Coda is winner. I am hearing micro details I haven heard before from my well known tracks. Decay is better with Coda.
6. Other minor details - Coda is half of Pass amp in weight and runs cooler than Pass. I like this :)
7. Build Quality - Pass nudges out Coda, but again it is a matter of personal likes.
Overall, extremely happy with the S5.5. Overall musical fluidity, smoothness, micro detail retrieval, speed, listening enjoyment has increased by a significant margin.
I wanted to thank @johnah5 for starting this thread. Terry, your insights on how the S5.5 would differ from Pass XA30.8 is SPOT ON!!! :)
I look forward to reading your "official" review.
Thanks to everyone else who has helped in this thread to make my decision buying the Coda amp.
P.S= The synergy between the S5.5 and the Supratek Grange preamp is like a match made in heaven!!!