Adjective
closed-back (not comparable)
Of headphones: completely covering the ear, so that there is no airflow through the wearer's ears.
Synonyms: close-back, close-eared, close-ear, closed-ear
Antonym: open-back
Combines the advantages of closed-back headphones (no sound leakage for a truly private experience) with the open sound of open-backs (typical “speakers” sound) – making it ideal for both home and street use. Source: Internet
Considering these are closed-back headphones – as all noise-cancelling units are – the soundstage is pleasingly wide. Source: Internet
Sennheiser is touting the latest additions to its lineup at CES, revealing the closed-back wireless earbuds and 3D Soundbar. Source: Internet