Sennheiser HD 660 s Apogee, Portable Headphones, Apogee Groove Amplifier – Sennheiser India Online Store
Sennheiser on Twitter: ""The Sennheiser HD 660 S are comfortable, have a great soundstage and a non-fatiguing combination of clarity and rich tone." @TrustedReviews rates the Sennheiser HD 660 S a 4.5/5