The PRO 550 (formerly the PROline 550) builds on the immensely popular HFI-580 (formerly the HFI-550) to create a professional headphone that is both durable and versatile. Featuring the same 50mm Mylar driver able to crank out lots of volume and punch, the PRO 550 also includes detachable cables and earpads. Updated for 2008, the PRO 550 now features thicker earpads and headband pad, brushed aluminum nameplate on the earcups and a nylon hardcase to protect your headphones on the go.

MPN: PRO550
UPC: 013964530476

- S-Logic™ Natural Surround Sound
- Dynamic principle
- 50mm Mylar Driver
- Frequency range 10 Hz-22 kHz
- Impedance 64 Ohm
- Max sound pressure level 102 dB
- MU Metal bufferboard, ULE Standard 98%
- Recommended minimum burn-in time: 8 hours