Quote:
Originally Posted by AndrewN
Hi guys, I am looking for some advice from Ref 2 SE phono users (and ARC phono stages / pre-amps in general).
I am currently getting some transformer buzz from my unit. More at some times than others, predominantly from the left hand of the case. It's a mechanical buzz, i.e. not through the speakers. The unit is a few months old and has done it from new.
I am used to a degree of transformer buzz on my tube equipment, I have a similar thing with my McIntosh power amps (MC2301s), sometimes it's a little louder than others. For background I live in an apartment and I guess the electrical supply is variable to say the least.
The slight buzz doesn't bother me, but it would be good to hear other peoples' experiences to get a feel as to whether some noise is considered normal. My concern is that if it is injecting vibration into the unit it could have an impact on sound quality?
All help and advice appreciated.
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Sure, vibration physically alters board level components and can negatively effect sound quality. That's partly why people hear sonic improvements with the addition of vibration control such as Stillpoints or SRA component bases.
I may hear a twinge of transformer noise from my RP2SE on initial turn-on, but when warmed up it is very quiet. I'm in the States and not familiar with electrical quality in London apartments but I think you're right to look at power variability in your building.
Do you have the opportunity to take your unit to a dealer for a comparison with another unit on a different power-line? But power is not the only thing to consider and there comparison may also help, based on the mechanical character of the sound. If it's been that way since new, you may have a loose or less-than-fuly-damped transformer, etc. Overall, ime, ARC linestages and phono stage are quiet.