Open-back headphones breathe through their cups: wider stage, more natural tone, zero isolation. Closed backs seal: tighter bass, real isolation, a stage that lives closer to your head. Neither is better — they solve different rooms.
Pick closed if: anyone else can hear you (office, shared flat, late nights), you record with microphones anywhere nearby, or you commute. The DT 770 PRO and DT 700 PRO X exist for exactly this.
Pick open if: the room is yours and reasonably quiet. Mixing, critical listening, long evening sessions — the HD 600 family, DT 900 PRO X, and everything in the reference tier upward is open for a reason.
The honest caveat: open backs leak both ways. They are not "a bit audible" — a household member two metres away hears your entire record collection. If in doubt, buy closed; disappointment runs cheaper in that direction.
Every headphone in the catalogue lists its design in the spec table, and the collection filters split them in one click.
