Sennheiser HD 660 S Open-Back Over-Ear Headphones Focal 100ICW8 In-Wall In-Ceiling 2-Way Speaker (Each) Dimensions: 5-1/2"W x 9-5/16"H x

Dimensions: 5-1/2"W x 9-5/16"H x 7-7/8"D

Integrated Bluetooth® receiver with aptX-HD

5-way binding post speaker terminals

16W x 4 Chan

implemented with an Aluminum Bobbin

Sennheiser HD 660 S Open-Back Over-Ear Headphones Focal 100ICW8 In-Wall In-Ceiling 2-Way Speaker (Each) Dimensions: 5-1/2"W x 9-5/16"H xSennheiser HD 660 S Open Back Over Ear Headphones The HD 660 S Open Back Dynamic Headphones from Sennheiser are headphones for the passionate audiophile and are crafted for the most demanding listener. Built with a transducer design that delivers lower harmonic distortion, they provide a natural, lifelike audio experience and can be used to produce crisp bass, transparent mid frequency response, and a natural treble when connected to high res players