Sennheiser was due to upgrade their wireless headphone range and they have done so in a big way. Instead of replacing the very successful RS range they have simply added three new models above the current range and instead of using the current radio frequency technology, they have moved to the superior Kleer Technology as used in the Sennheiser MXW1 portable wireless headphone they released about a year ago.

The Sennheiser RS 160 is the entry-level model: the closed headphones impress with their detailed sound and powerful bass reproduction. The volume can be controlled directly on the headphones.

The Sennheiser RS 170 is the mid-range model and is also a closed model. It delivers dynamic bass boost and switchable surround sound.

The top-of-the-range Sennheiser RS 180 model is targeted at sound purists; the open design ensures a particularly natural listening experience which can be set to individual preferences.

The speech intelligibility can be improved through dynamic compression (Automatic Level Control) and the balance can also be individually adjusted.

Due to arrive in October 2009, pricing has yet to be announced.