PC for Brsyton 4B SST

Many ground loops are the result of dc on the cable tv line or dss. If you have video hooked thru your audio system and have a bad buzz going, remove the co-ax cable from the input of the cable box or dss receiver..If the bad buzz vacates, then the problem is on the line..Also if you have several pieces of audio hooked to 2 or 3 ac outlets you may be encountering different ground potentials which will give you an offset and result in hum or a bad buzz.Tom

Thanks everyone for trying to help me.

Here's is an update to my situation. I went today to a local stereo shop and explained my problem. He suggested that I purchase a Audiophile APS unit. The 700 watt version retailed at 2700.00 Cad a bit out of my price range for now.

Just to set things straight I've tried disconnecting my cable entirely and the buzz still remains. The video is hooked up to my Monster Power Bar and from there to my TV.

All of my components except my amp are hooked to my power bar. The outlet I'm using is a switched one by that I mean a wall switch cuts all power. I've tried tackling this problem before by unplugging all house app and switching outlets the buzz still remains.

I thought some fresh blood this time around might give me some fresh insights.

Many Thanks

Freaky, at the risk of being too opinionated, I'm going to say the $2700
Audiophile APS suggestion borders on ridiculous because you're talking
about a power conditioner with a price that is out of proportion to the
rest of your system, and may or may not be effective. Be CERTAIN you
can audition something like this at home in your own system before you
buy.

You said before the buzz occurs when you connect the receiver, and
goes away when you disconnect the receiver. This suggests the receiver
is the problem.

Will your local stereo shop allow you to do a home audition of another
receiver or preamp? Are you running 2 channel, or is your receiver also
providing multi-channel sound?

Here's another idea. With the system on, take a wire and touch one end
to a metal part of your receiver's chassis (or screw...bare not painted
metal...you get the idea), and touch the other end to the metal chassis
or screw of the Bryston. Does the buzz go away? Don't touch the IEC
outlets...just some exposed metal on the individual chassis. You're
testing to see if this provides a ground for an ungrounded component.
Sometimes Bryston has a ground screw somewhere on the back panel
that you can use for this. Perhaps the NAD does too.

Disclaimer: I am a hobbyist, not a professional. Consult a seasoned
professional for more complete information.

I really dislike lawsuits.

Tvad,

I agree with you about the power conditioner.

My reciever is for now operating for both 2/ch and HT duties.

Yes it is correct when the reciever is not connected to the amp and both are turned on there is only a slight hiss. The hiss does not increase with the volume a good thing right.

With the reciever and amp connected and both turned on the buzz returns. It also returns when my amp is taken out of the loop and the reciever running the whole show.

You mentioned the use of a wire can you give me any suggestions.

I have a better repore with another store a different one but I haven't asked them. Next time I visit them I will.

Tommorow I will call Bryston and find out about a ground screw and I'll try the same with Nad.

Freaky, any wire will do...lamp cord...some old speaker wire...anything insulated where you touch it and with bare ends. The ground screw will be obvious if you look on the back of the receiver or amp. Plus, you don't need a ground screw to do the test...just any bare metal or screw that's part of or attached to the chassis.

I asked about two channel vs. multi-channel because I wanted to know whether the idea of a different preamp or receiver was the right choice. So, you're using the Bryston for amplification of front left and right channels? Did you buy the Bryston from a dealer? If so, perhaps they can loan you a Bryston SP 1.7 multi channel processor to test. Otherwise, a different multi channel receiver. It sure seems to me the NAD is the culprit. Again, the hiss is common.