What did you say ? Only kidding but I've noticed a dropoff in my hearing too. And my euesight and,, lets stop there. It can be a variety of reasons even as simple as not resting enough. Need to see an MD for a better answer.
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Bill in SC --- Roland BK9 (2) Roland BK7M, Roland PK5 Pedals, Roland FP90, Roland CM30 (2), JBL Eon Ones (2) JBL 610 Monitor, Behringer Sub, EV mics, Apple iPad (2) Behringer DJ mixer