Hi @qwaszxxx
Firstly, has anyone found themselves in this same position and compared these two models themselves?
Unfortunately, no, but I have listened to them separately in show conditions.
While I found the Piega clear, with a good dynamic range and probably more bass than I could hear in show conditions, the Stenheim offered more clarity (exemplified subjectively by the sense of distance between the instruments). As a result perhaps, bass was more pronounced.
Both played loud without perceptible compression.
I don't remember the electronics used.
Stenheim vs Stenheim SE: no clue, but marketing blurb has it the difference is in the internal wiring, etc. Don't know if it justifies a high premium.