Sennheiser's 2011 headphone lineup (photos)

The CXC 700 earphones are Sennheiser's new digital noise-canceling headphones. They feature the company's proprietary NoiseGard system, which allows travelers to choose from three different modes optimized to reduce low-, medium-, and high-frequency noise. The CXC 700 is set to go on sale in early 2011, but pricing is not yet available.

The MM 550 Travel headphones are designed with both comfort and sound in mind. Oddly, they include Bluetooth, a technology that is not allowed during air travel. The plus side is that they offer Sennheiser's NoiseGuard noise-canceling feature as well as SRS WOW 3D functionality, which can be activated via a switch in the right earcup. The MM 550 is available now for $499.99.

The Sennheiser PXC 360 BT headphones were designed with music-loving multitaskers in mind. They integrate with any Bluetooth-capable cell phone, and also feature noise-canceling and SRS WOW HD functionality. The large, cushy earcups aim to offer comfort during extended listening. The PXC 360 BT are available now for $399.95.

The Sennheiser PX 360 headphones are a collapsible, travel-friendly set. These earphones include a case for storage and will be available later this month.

In a new partnership with Adidas, Sennheiser focuses on the fashion side of the brand rather than the athletic. The HD 220 headphones are a stylish on-ear set that are available in white and blue or black and blue color combinations. They feature the standard three-stripe Adidas logo and include a travel pouch. The HD 220 set is available now for around $65.

On the earbuds side of things, Sennheiser and Adidas paired up to launch the CX 310, an attractive in-ear set with silicone eartips and a travel pouch. The CX 310 headphones are available now for $65.

The PMX 90 is part of Sennheiser's ultraportable line. They feature a stylish design and are super lightweight. These headphones will be available early this year at select retailers.

The PX 90 set is part of Sennheiser's ultraportable line. They feature a stylish design and are super lightweight with a thin, flexible band that goes across the head. These headphones will be available early this year at select retailers.

The CX 980i is the latest set of earbuds from Sennheiser to integrate a line-in remote for use with iPhones and some other music phones. The CX 980i set will be available later this month.

The HD 238i is the latest set of on-ear headphones from Sennheiser to integrate a line-in remote for use with iPhones and some other music phones. The CX 980i will be available later this month.