Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Serious quietness

These headsets produce some serious quietness. Overall I'm pleased with the purchase. This is the only noise-cancelling headset I've ever owned, so I can't really compare it to other products. It's more comfortable in the ear than foam ear stoppers. Neither one blocks as much bass as I'd like. The headsets do a better job of blocking repetitive noise while not blocking voices.