I don't know about the relay pop, you may want to make sure that the amp and AC outlet it's connected to are properly grounded. Beyond that, if the amp produces audible hiss without the inputs connected and the speakers aren't super high efficency models, then you'll need to send it back for servicing. There may be an internal problem. Try pulling the AC plug and then repowering the amp after about a minute. Sometimes that will allow the regulators to reset, which might get rid of the noise.
Pink noise whine hiss on Levinson 333
Please help. My ML333 amp makes a pop sound on the speakers when switch to ON from Standby -- I can hear the relays clicks inside the amp then follow by the pop (sometimes it pops going to Standby from ON). Worse yet, when it's IDLE (amp ON but not playing music) I can hear the amp puts out pink noise on the upper-mid and high drivers (my guess is 2kHz and up) when I am 2 feet away from the speakers. The noise is there with or without the preamp connected. Does anyone know what are the problems? It shouldn't be the from the main power line because I don't get this problem on my Denon home-theater receiver. Thanks in advance.
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