Recent discussions in the last 24 hours | Audiogon Discussion Forum Audio Research definitely misjudged how its products are used when it put the plas (cleeds) Yes the power tube runs hot, my cover is also warped I took the cover off and pu (barts) I owned a REF5SE that was a dealer demo It also had the lexan cover which was als (theo) Appreciate the tips My unit does have the thinner cover