SENNHEISER HD 660S2 REVIEW | Audiophilepure

After the bass section, surely the treble section is most exciting and most retuned. Treble is lively and energetic, with a spacious, clean, and precise delivery. Treble extends well but always is perfectly controlled. The popular peak is still their around 3kHz and the roll-off starts around 8kHz but you never get the feeling of missing out. At the same time treble is always clean and lively to the ear, never becoming harsh, sharp, or unpleasant. For me this tuning works really well.