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Berning ZH 270 and Power conditioning

Question to ZH270 owners: Do you find your amp sensitive to the quality of AC? I get a little bit of buzz from the amp(and not from the speakers) from time to time. The noise's level and pitch change with (i) different Power Cords connected and (ii) as the other electronics and lights in the listening room turn on or off.

How do you suppose I address this issue? I am anticipating the first answer to be the dedicated circuit, which I'll look into, but what else have you found to improve the Zh270's sound? I am primarily interested in the effect of power conditioning (Hydra, PS Audio, Equitech, etc.) and power cords. Any input will be appreciated. Thanks. BTW, my VERY simple and humbe system consists of:

Reference Audio Mods (RAM) modded SACD1000 w/ 3.0V+ output
RAM silver interconnects
Berning 270
FMS Zero speaker cables
Kharma Ceramique 2.0s

Henry
henry_la
sbank's avatar
sbank
2,038 posts
 
Henry,
I've heard that the commonly recommended mods for the Berning include the Silent Source power cable.
On my own amp, which doesn't have the upgrades, I use a Virtual Dynamics PC, and a Blue Circle Music Ring conditioner. It sounds quieter w/the conditioner than without. Either way, I'm feeding to a FIM outlet into a dedicated line.
I'd like to try some other PCs, but haven't had a chance to yet. Hope this helps a bit...Spencer
khokugo
122 posts
 
I use Silent Source Sig PC and Blue Circle Music Ring power conditioner. The dealer brought over the power conditioner and I did hear the difference for better. But, note that that may be the effect of Music Ring on CDP. My understanding is that ZH270 has several steps of conditioning in itself and external power conditioner shouldn't have much effect. But power cord still does make difference.
Lastly, I have never heard the "buzz" you mention.

Ken
twl
3,251 posts
 
If you have low voltage lighting in the room, with ballasts in them, they might be sending out hash onto the line. They are notorious for doing this. Try to determine which lights that you have on when this noise occurs.
stiltskin
499 posts
 
Hello Henry, Look into borrowing a burnt in shunyata taipan a.c.cord for your Berning...It will cost you nothing but your time to check it out... As for the slight buzz,give David a call...Good luck...
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