I have had the original Martin Logan CLS (1s) since 1988 and last changed the panel in 2002/3 as I was renovating our house and felt the panels got damaged in the move. At that time I coordinated with Jim Powers at ML and he also refreshed my electronics/power supply. Since then these speakers have been performing and enhancing my enjoyment. I have powered them with Audio Research D-70 Mk.II, Music Reference RM-9 Mk.2 and now the CAT JL5 (Black Path). They provide that magic that very few other speakers do. Over the years I tried the B&W 801's, Hales Reference etc. and now I did pick up the German Physiks Unlimited and have it in a second set up, but I just keep coming back to the CLS. I am considering a used ML Renaissance but we will see. In 2011, when ML announced that they will not mass produce the panels of CLS's anymore I panicked and bought a pair of spare panels as insurance which I have not had the need to use as yet. If you take reasonable care these panels last forever.
Enjoy them as there is no real replacement.
Enjoy them as there is no real replacement.