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Primaluna signal tube replacement

I need to replace my small signal tubes in my 2 year old Dialogue Premium.  The 2 middle tubes are good.  I had replaced those with GL 12au7.   The outer tubes are stock Primaluna.   Left channel got “scratchy” and I replaced with some backups. 
Do I go cheap? Doesn’t affect audio quality,,right?  Or pay more for longevity?  Love the amp and it’s on a lot.  Thanks for your advice. 

george53
george53 OP
44 posts
 

Hey thanks for that.  I swapped speaker cables and the scratchy moved with it.  My spares were Primaluna and the noise vanished.  So,, replace my spares now.  Voodoo

 

 

tablejockey
3,890 posts
 

"My spares were Primaluna and the noise vanished"

Sometimes, merely re seating the tube in the socket cures

noise. The suspect tube may still be good.

rshak
417 posts
 

I own a PL DiaLogue Premium Integrated that's about 7 years old. It's in daily use  2 to 4 hours per day.  Several months ago the a couple of the 12au7 tubes became noisy, and I decided to replace all six (6) of them.  I went with General Electric JAN stock from Upscale Audio - and opted for premium grade a/k/a "Kevin's Stash."  They've been wonderful - dead quiet. Not cheap but well worth the money, as far as I'm concerned.  

https://upscaleaudio.com/products/ge-12au7-6189w

stereo5's avatar
stereo5
6,384 posts
 

I bought some of “Kevin’s stash” tubes for my Mac preamp mc phono stage.  They are so quiet, it’s scary. Well worth the money. 

bolong
602 posts
 

Primaluna’s stock tubes in the outer positions are fine. I have been running vintage Amperex "Bugle Boys" in the gain positions with great results. On the power amp I run A-matched EL-34's from Sophia Electric - also outstanding.

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