I have owned two Prima Luna amplifiers for the last 12 years (PL2 integrated and PL 5 power amp). I have not had any issues in all that time. 12 years ago, I wrote a review of the PL2 for Audiogon. My feelings are only more positive after 12 years.
https://forum.audiogon.com/discussions/review-prima-luna-prologue-two-tube-amp
Rich
https://forum.audiogon.com/discussions/review-prima-luna-prologue-two-tube-amp
Rich