Best 12AX7/7025 Brand for reliability..

[jpdesroc]

Hi,
I'm about to buy some spare 12ax7/7025 tubes
from a local seller..
For low microphonics, gain & long life reliability
what are the best choices in the following list I'm offered:

Sovtek 12AX7WA/7025
12AX7/6N2P
RCA 7025A
12AX7 Black Plate
12AX7 Grey Plate
Westinghouse 12AX7 Black Plate
12AX7A/7025A Grey Plate
GE 12AX7A/7025
12AX7WA
12AX7WA Grey Plate JAN
12AX7 Black Plate
12AX7 LONG Grey Plate
Tung-Sol 12AX7 D-GETTER
Sylvania 12AX7WA JAN
12AX7 Grey Plate
Rogers 12AX7
Amperex 12AX7A/ECC83
Brimar ECC83/12AX7

Thanks !

 

[maddnotez]

Hi,
I'm about to buy some spare 12ax7/7025 tubes
from a local seller..
For low microphonics, gain & long life reliability
what are the best choices in the following list I'm offered:

Sovtek 12AX7WA/7025
12AX7/6N2P
RCA 12AX7 Black Plate
12AX7 Grey Plate
Westinghouse 12AX7 Black Plate
12AX7A/7025A Grey Plate
GE 12AX7A/7025
12AX7WA
12AX7WA Grey Plate JAN
12AX7 Black Plate
12AX7 LONG Grey Plate
Tung-Sol 12AX7 D-GETTER
Sylvania 12AX7WA JAN
12AX7 Grey Plate
Rogers 12AX7
Amperex 12AX7A/ECC83
Brimar ECC83/12AX7

Thanks !

Just like everything else there is no "best" choice. I go by what sounds good to my ears with tubes vs. reliability because all tubes die eventually but all "good" tubes will probably work longer than I keep whatever amp I have

All tube manufacturer's can have a dud here and there and not all tubes are the same imo.

I have however read that the Sovtek 12AX7LPS is the most reliable tube ever made but that is just someone's opinion.

I prefer RCA Long black plated but I have one that is very microphonic if I put it in V1.

All 12ax7 are rated at 100 for gain but rumor has it that RCA has the highest gain tube.

Here are some pretty good links to read up on imo:

(Best) https://www.ebay.com/gds/The-Tubekings-G ... 944/g.html
(There are two parts to this guide, find the other one on his ebay page)

http://www.worldtubecompany.com/mm5/mer ... creen=TF-2


http://www.thetubestore.com/Resources/P ... iews-Chart

http://scobro.x10.mx/PreampTubeGuide.html