Ultrasone Debuts its Flagship HFI Series Headphone with the Open-backed HFI-2400
Wildomar, Calif. - (October 13, 2009) – Ultrasone Inc., distributor for German headphone manufacturer Ultrasone AG, is proud to announce the release of its flagship HFI Series headphone – the HFI-2400. With the debut of the HFI-2400, Ultrasone has designed an eye-catching black and silver, open-backed headphone that satisfies the highest of listening demands. more








