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If you own the dwelling - if you havn't already get yourself a dedicated circuit (s) installed for your stereo . i did (20 amp circuit wired w/10 ga romex to a decent outlet) & it allowed me to unload all the unneeded BS power conditioners, surge protectors, etc & have a dead quiet power source.
I'm pretty sure it's the Allnic causing the trouble because when I take it out and use my dvd player, there's no noise. But I don't know what to do about it--other than buying a different stage and hoping it has no issues. For the price of these power conditioners, I'd just as soon sell the stage and buy a different one.
i would still use a good power conditioner. even with a dedicated line whether it be romex or say another type of wire. you are still going to get noise coming in. this makes a good power conditioner a must so as to filter out any noise that is going to get in. you are also going to pick up noise from your other components. another reason to get a power conditioner is for surge protection( lighting, power spikes etc). romex is going to be ok but a wire that is made for audio dedicated circuits is going to be better( more dynamic, smoother, a bit more on the quiet side).as far as your phono stage is concerned it sounds like you have isolated the problem. power supply or bad tubes sound like the culprit. i take it that your phono stage in made in china( most are now ). send it back and get a new one or see if you can get one that is made in the US. i am not a fan of chinwa audio gear.hope this all helps. good luck and tell us how you make out.R.
Try moving this component as far away from the others as possible (its power supply too). Phono stages can be very sensitive to stray signals from other components in the area. Dumb, dumb, dumb, dumb question that must be asked; are you using the grounding wire from your arm? Are you sure it's properly secured to your phono pre?
get an electrician who ain't lazy & is physically able to climb & get yourself a dedicated circuit.... ...cheers!
FWIW worth a word of caution- all power conditioners don't have a positive sonic effect. I have experience some very well known brand names that made my set up go backwards in sound quality. Yes, try to audition before buying. However it seems that your phonostage is the source of a large proportion of the noise. You will probably get the most bang for the buck to address that - have you thought of changing it to another brand? Conditioners clean incoming AC power supply and may not have as much effect on noise self generated by components in your system.
i have no compression with my Running Springs PC. what is going to cause more compression is a lousy power cord. if you are using the stock power cords lose them if possible. i would only get my tubes from roger. no one tests tubes , grades or matches them like he does for any of his products.
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