Keeping the Decibels Down to a Dull Roar

When the music's cranked up at aerobics class or the rock concert, muffling the decibels can help preserve hearing.

The options and the costs:

* Ear Group noise filter plugs, 3 pairs, $2.49.

* Physicians' Choice Ear Putty, 2 pairs, $2.99.

* Custom-made swim plugs, $60-$65 a pair.

* Custom-made "musician" plugs, $120 and up a pair.