I would never sell:
thiel 2.4 (purchased 2004) paid 4x
Bryston 4b (purchased 1990, recapped 2022). paid 2K
Threshold FET 9 preamp, purchased 1989. paid 2K
Guesstimating replaceing the above with new components would cost 15K easy.
I would like to create a second system with magneplanars 2.7i. Would be in the basement. No way wife will allow a 6ft tall speaker in the living room with the main stereo.

