2. amps-preamps
  3. 149822-92009

ATI AT6007 amplifier hum

Long time reader and first time poster. I recently traded in my Pass Labs X600.8 amps to ATI AT6007 and AT528NC combo for my 9.1.4 setup. I have 3 dedicated 20A lines which I’ve used previously for the pass labs and now for the ATIs. I did not hear a hum from the pass labs but I’m now hearing a hum from the AT6007. I’m also using proper 20A power cables. There is no hum from the AT528NC. Please advise. Will I need a DC blocker or power conditioner?
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Showing 2 responses by millercarbon

millercarbon's avatar
millercarbon
12,531 posts
 
Well you can always hunt around for one. However I seriously doubt that you really need it. 20 amps I mean.
millercarbon's avatar
millercarbon
12,531 posts
 
If the hum is coming directly from the power transformer in the amp itself then its caused by DC offset. Other current draws on the circuit can sometimes cause this, in which case you may be able to eliminate the hum by turning different things off until you find the offender. Otherwise its a fairly cheap fix, search for DC offset eliminator, or maybe someone will chime in with the answer.


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