The acrylic tops will warp. The key is to leave at least 8 inches clearance on the top of the amp. The problem is, people are jamming their amps into shelving with only a couple of inches clearance causing the heat to pool in the center of the acrylic cover.
ARC REF 5SE Cover Warping
I am considering purchase of a Ref 5SE, and one thing I've read about the preamp is that the acrylic cover can warp over time (presumably due to heat).
If you own this preamp, and you've noticed the same issue, what do you do about it? Leave the cover on and forget about it? Keep the cover off at all times?
If you own this preamp, and you've noticed the same issue, what do you do about it? Leave the cover on and forget about it? Keep the cover off at all times?