These things are pretty solid and appear to be well made. I am using them with Edifier MR4, and they could easily handle a bigger speaker. At the sale price they are a decent value.

The problem is, while they raise your speakers above your desktop, they do not add any meaningful upward angle. The description says 10 deg., but they seem nearly flat to me. So your speakers will beam the music into your chest. Put differently, you ears are still off axis.