Koss Sporta Pro

The Porta Pro platform in sport clothing: the same open on-ear drivers and the same warm, bass-forward Koss balance, hung on an adjustable band designed to stay put while you move. It folds down small and lives in a jacket pocket.

Isolation is nil — that is the point outdoors, where hearing a bus matters more than hearing the bassline perfectly. At 60 Ω it runs from a phone dongle or anything else you own.

Buy it for movement: the gym, the bike path, the walk to work. If the headphone will spend its life on a desk, the KSC75 or KPH30i are the better-sounding money.