Bought 8 of these from Lamps Plus along with the Juno Track System. I contacted Lamps Plus about the buzzing sound and they had me buy a Lutron dimmer compatible with LED track lighting, and the buzzing still exists.

My issue is with the sales team as they also suggested that the professional I had install the system may have installed them incorrectly. If you do a search for these particular track heads, you will find that others complain of this issue of the track heads buzzing. One solution is to buy an electric dimmer, which is very expensive. I read that Lutron carries an MAELV dimmer, and I'll try that. I wish the sales person knew this before he suggested I buy the other dimmer for $25.

The sales team needs to trust that their clients are experiencing issues with these track heads and should investigate the issue and stop selling them until they find a solution.