2. amps-preamps
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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

Showing 1 response by georgia2k

georgia2k
27 posts
 
In my 75 year old house the ZH270 would emit a grounding "hum" whenever I plugged it direct into the wall ( upgraded FIM ) outlet. Had hum whether using cheater plug or not. No hum when plugged into BPT-2 Ultra or Sound Applications XE-12. I'm a big believer in BPT products.

I owned ZH-270 with NOS tubes and ERS kit. Used TG Audio SLVR power cable.

- Ken
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