Nuforce with Stillpoints ERS fabric

Actually that is one of the products that's recommended for tweaking the Nuforce amps. Check out this sight for more info.

www.magnancables.com/pages/tweaks/nuforce.html

I have Nuforce 9SE's and have found the Stillpoint ERS material to make a material improvement in the sound. However, they did not solve the problem I had with both amps humming. After E-mailing Jason at Nuforce, I found the answer lies in AC grounding. Do not float the grounds on the amps and if possible have the amps and preamp connected to the same circuit. That solved the humming problem for me. Good luck. Jason may have further suggestions.

I replaced the Nuforce with my Anthem amp and the buzz went away, That's how I figured out that it's the Nuforce amps.
I am only using balanced for the amps, I don't have balanced inputs anywhere else. It is not a dedicated line,but I will be having that done in the near future.
I have satelite tv and do not have this issue with anything but the phono playback.

Jdodmead,

I had the same problem with a pair of early vintage NuForce Reference 8 amps that caused noise in my phono stage. In fact I ended up selling that phono stage thinking it had some issues, but now I realize that it was the RFI from the NuForce amps that caused the noise. This was an expensive solid-state phono preamp. In that same system with the NuForce amps, a Musical Surroundings Phonomena phono stage worked fine -- I guess it had better shielding. Also, The TAD-150 tube phono seemed to be okay.

You didn't say which NuForce amps you had or which vintage they are. If they are the older Reference 8 amps, (below version 8.02) they probably don't have the RFI chokes on the speaker output wiring, in which case you can return them to NuForce and have the RFI supressor chokes installed.

If they are a newer model, and they have the chokes (you can see them if you remove the covers) then another approach would be to move the NuForce amps as physically far away from the BAT phono as you can manage. Perhaps use long interconnects and put them on the floor by the speakers. I have another system set up that way and there is no phono interference at all. But that one uses a MM phono preamp and not the higher gain MC phono amp. I think that if your NuForce amps have the supression chokes and you separate them from the BAT phono by a fair distance you shouldn't have any interference issues.

Good luck, and let me know how you make out.

Jdodmead,
I had a similar problem after purchasing a bel canto eVo6 which is also a switching amplifier. The amp forced me to clean up my AC. I removed all dimmers and flourescent lamps and installed a Dayton videa isolation transformer on my FM antenna cable lead and grounded my Marantz SR7200 chassis to my BBT PP1 power strip. My system is dead quiet now and I like the the amps power, tone, efficiency and the fact that it is good tool for testing the quality of your AC. I had ordered Stillpoints ERS cloth(6 adhesive sheets) before performing the above mentioned steps and it arrived after I had quieted my system. I lined the inside of my amp and Marantz DV8400 with the ERS Cloth anyway. I'm not sure if it made a difference but I have been very pleased with my system and have not had the urge to make any big changes.

My friend had a funny idea. Line the inside of a hat with the ERS Cloth. Has anyone tried this. I bet Harvey R. (Gizmo) would have.