2. amps-preamps
  3. 1209864603

pre-amp unacceptable noise level?

How much is an unacceptable level of noise/humming etc. from a pre-amp? I just bought a new tube pre-amp and when I replaced my old solid state one with it the noise level from the speakers practically tripled. There is an audible humming from the listening chair 10ft. away. I can't say I'm particularly happy with this considering the one I replaced did not do this.
fruff1976

Showing 7 responses by fruff1976

fruff1976 OP
103 posts
 
I've tried cheater plugs with no luck. It's a Rogue Metis.
fruff1976 OP
103 posts
 
I don't have t.v. hooked up into it. It's just a 2 channel rig with a cd player and I haven't hooked up my turntable yet.
fruff1976 OP
103 posts
 
Not sure how to bias tubes? This is my first tube pre-amp. Also, after hooking up my old solid state pre amp I noticed the system noise I'm talking about is present, but not as loud as with the rogue. Is it possible the noise is originating in my power amp and is being amplified to a greater degree with the rogue?
fruff1976 OP
103 posts
 
I'd say hum and hiss + buzzing. It's just noise which can be heard in the room when the unit is turned on. About 20 seconds after you turn it on the buzzing/hissing/humming starts.
fruff1976 OP
103 posts
 
UPDATE: when I switch out to my old preamp the same type of noise is still there, just much quieter. You can hear it maybe up to 1ft. away from the speaker. It seems as if this amp is just accentuating the noise to an obnoxious degree.
fruff1976 OP
103 posts
 
The noise is the same level whether the volume is up or down. It's independent of the volume level. The problem is during softer passages or listening at lower volumes the noises/buzz/humm/hiss whatever it is can be heard over the music. It can be heard even when the cdp is turned off and no music is playing.
fruff1976 OP
103 posts
 
The dealer was very cooperative along with Rogue and a new one is being sent. Rogue customer service along with the dealer has been outstanding so far.
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