Upon using it I noticed an immediate difference. If you have a water craft heavier than 160 pounds including battery, motor and gear (minus the occupant), Dont waste your time on the 1. I usually always wear a 7. My husband installed them in under 20mins. Balanced tonality with solid bass and sparkling highs and a nice full sound field when used with a good headphone amp. You may be able to find one cheaper, but this one looked like a good quality one, so Im satisfied. I’d give 5 stars if not for that issue. Thanks very much for a great product! So if you live in a fine efficiency apartment, this might work for you. Erster Eindruck: WOW!