AT-HA25D is Audio-Technica's headphone amp built-in with a D/A converter. It supports high quality sound with 192kHz/24bit from the D/A converter. Featuring an advanced optical digital input and line output equipment. Audio-Technica's AT-HA25D corresponds with DVD players, home theater systems and other high-end audio devices. The front panel has a signal indicator to verify the optical digital input. Designed with an aluminum body, available in silver.