A Hidden "Feature" of the Cornwall IV
The Cornwall IV is so sensitive in all respects. Source, cables, power, time of day, recording, tubes---it is so revealing of changes you make. I won't say it's scientifically transparent. Instead, I'd say that it's overtly shows a difference with every change you make. That can become a game or enjoyable in its own right, and draw you away from the music.
The good news is the Cornwall IVs are clearly a musical speaker. This translates into most swaps of gear in and out sounding pleasant in their own right.
Here's the problem: I can easily sit tight with the Cornwalls and any decent setup of attached kit. But it is so utterly intoxicating to hear so many different things play with the Cornwalls.
Curiosity killed the cat. This cat might end up in bankruptcy!
What a wonderful loudspeaker.