Well, partly the room.Played Alison (glass-breaker) Krauss last night for the first time since removing the 2 rolls of R-13 bass trap that Muse had been using for a perch by the window in favor of her new listening chair.
Different tonal balance for sure. About 50% of the treble sharpness is gone. Gonna pad down the circuit a few more dB and listen again but have to wait for some .22uF caps to arrive.