has anyone heard the nuforce amplifiers

The RFI problem is partially fixed by this patch
http://www.nuforce.com/support/F15HER3-patch.htm
For some receivers, it will dramatically reduce or eliminate the RFI problem. We tried it on Sony FM receiver and the problem goes away. But for others, the problem is only somewhat reduce.
We'll let you know in a week. Meantime, we appreciate whether the patch works for you or not, email support@nuforce.com and let us know.

THe RFI problem does not affect pre-amp or other equipment other than your FM receiver.

Jason

We sent out parts and instructions to all dealers on May 25 & 26 for improving NuForce amp HF resolution and reduce RFI. Instructions can also be found on the updated support web page:
http://www.nuforce.com/support/F15HER3-RFI-service.htm
Feel free to contact support@nuforce.com for any assistant or questions.

Jason