Well, I got a new W-1 from Sleek. Thanks so much for sending it.
Unfortunately, the High pitched buzz is present with this one as well. If I do the hold both buttons to switch channels, sometimes it grabs a good channel with little to no buzz, but most of the time it's noisy.
The buzzing happens even when the W-1 Transmitter is not plugged into anything. There needs to be a way to get it to stay locked into a specific frequency channel. Whatever it defaults to has the buzzing noise. After a few, "press and hold" both buttons to cycle through different channels, I eventually get one that has little to no buzzing noise.
It's very annoying to have to keep doing this channel changing procedure every single time they auto power down. The W-1 powers down pretty quickly, so if you have enough a pause between songs, like if you stop playing music to answer a phone call, or something, it shuts off, and then when you power up, the buzzing is back.
Either I am very very unlucky, or the Sleek W-1 is just not ready for prime time yet. I haven't had any experience with other Kleer technology products, so I don't know if it's a defect specific to the Sleek W-1 or an inherent design defect with Kleer audio in general.
-Ed