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Found 2 results

  1. Hello I have a TEAC A-H01, I used it for 3 months or so and then it suddenly began to hum on any input selected. I have tested the speakers on another integrated amp and there are no issues. I tried headphones and the same humming occurs. The testing was done on the same electrical line and everything is grounded because the test integrated amp does not display the same symptom. The hum occurs with the said device connected to speakers alone; no coax, usb, optical or line in connected. Could anyone who has the same device or similar provide some insight? Is there something more I can try? NOTE: After haring the humming I simply put it back in the original packaging and left it there for almost a year. I suppose I should have taken it in for service but I am certain I was just too busy. Anyway I think it needs a repair but perhaps there is some magical thing I can try.
  2. C390dd

    Dear All, Believe it or not this is my first forum entry ever! Reason for joining and making this thread is that I need to convince myself that my newly purchased c390dd is "normal". I got it two weeks ago. Spent I week or so setting up, getting proper cables etc, and have now been using for a week. First off this is an amazing amp. I use it to drive my PM1's and the whole setup sounds great; don't regret a minute... AWESOME! However I have one doubt, and this is where I need your help: When attached to the mains both on, off and when playing, the unit produces a very slight high pith hum. This is only audible when very close and everything around me quiet.... I have tried to contact the dealer and NAD and none of them really know. Note: I have tried with and without speaker/woofer cables attached and running the mains thru linsy 6way mains conditioner.. I have yet to try to ground the unit as recommended in the manual... Everything seems alright and sounds GREAT.. But I need to know; has anybody experienced this; IS THIS NORMAL?
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