Kleer Wireless technology is a propriety protocol made by none other than – can you believe it – Kleer.

According to Kleer their wireless audio can deliver:

• CD quality digital sound
• Low power usage
• The possibility of extended range wireless coverage

Kleer wireless Technology is currently used in wireless earphone products manufactured by Sennheiser, RCA, DigiFi, Cy-Fi, and Sleek Audio.

Here is one person’s take on the quality of the sound using a set of Kleer wireless earbuds:

Next, plugged in versus wireless: Having been disappointed by Bluetooth, this test amazed and surprised me. The Kleer wireless technology the drives the Sleek Wireless Accessory lived up to all the claims, and I was not able to hear any differences. In fact, I think in a blindfold test no one would know whether they were listening to a wireless device or one plugged in. I tried all the music described without any detectible difference in sonic quality. My advice is to forget A2DP Bluetooth and switch to the Sleek Wireless Accessory (or other Kleer-based wireless device) as soon as you can. When it comes to wireless music, the Kleer technology will make Bluetooth a thing of the past, I’m sure.

If you been disappointed that Apple has not put A2DP Bluetooth on the iPod or iPhone, don’t fret – you can now forget about Bluetooth on your iPod and jump right to Sleek. The Sleek wireless transmitter plugs into the earbud/headphone outlet on the iPod and iPhone and transmit a flawless, CD quality signal to the Sleek Wireless Accessory to which the Sleek head sets are attached. The music quality is unsurpassed, equal to or better then the most expensive audiophile over-the-ear headphones money can buy. Forget Bose, forget Koss, and all of the other high priced name-brand headphones. A Sleek custom in-ear head set with the Sleek Wireless Accessory takes head sets to a whole new level of sonic quality and wireless convenience.

courtesy of hi-fi-org forums