2. amps-preamps
  3. 161387-96791

Constant noisy tubes maybe go solid state?

I have a Quicksilver Line Stage Preamp (12AT7) mated to an Odyssey Khartago Stereo. Overall I like it. Way too much gain but I digress. Weeks after receiving it I rolled in a few different tubes, kinda fun to color the sound signature. I liked rhe RXA black plates I got and those stuck around for more than a year. They started going microphonic and making noises so I ordered another pair (noisy) then another different vendor (blasts of white noise) and another set that arrived today (one is noisy as holy hell and one seems fine).

So where does one order preamp quality tunes that are quiet? Is there something I’m not requesting when ordering? Maybe dump
snd go solid state? I’m trying to be humorous because I’m pissed. Ha.
gochurchgo
leemaze
330 posts
 
I sent back my crazy noisy RCA blackplates to Brent Jesse and spent 4x the money for Mazda 12AU7s pre-tested for noise and microphonics. These are better - actually listenable - but there’s a weird high pitched whine every so often and I can still clearly hear hiss from the listening position in quiet passages of music. I like the 3D effect but find myself straining to hear the music at my normal listening volumes (~60dB). This is after 72hrs of burn-in. 
Amp is Rogue Sphinx v2. Speakers are Wharfedale diamond 10.7. 
Am I missing something? Is this as quiet as it gets?

Thanks!
gochurchgo OP
923 posts
 
@leemaze I had that issue too when the RCA's were on their last legs. Intermittent super high pitch whine. Seems to come on more often the longer they were burning in a single session. Might be tubes going bad.
slaw's avatar
slaw
21,820 posts
 
Why not talk to Mike Sanders?
gochurchgo OP
923 posts
 
@slaw  mentioned up thread. Emails and voicemails unreturned. Sh*t service.
decooney
2,113 posts
 

@slaw
"Why not talk to Mike Sanders?"

@gochurchgo
... "Emails and voicemails unreturned. Sh*t service".

Really, no response ???

Mike at Quicksilver just emailed me back in 10hrs, on a Saturday weekend day mind you. Fast response. Use email.  

He’s fine, open for business and customer service. I shared some of you could not reach him. He wanted to know what the issue is and what its about. He said to call or email him. Try again. FYI: his contact page is UPDATED with the direct (gmail) email address listed, go to: http://quicksilveraudio.com/contact/

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