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Amperex tubes questions

Hi,
I am about upgrading my SFL-2 tubes and got an offer of Amperex :
1. 6DJ8, orange labeled, made in holland, PQ, A-getter, non-gold pin.
2. 7308, white labeled, made in USA, no "PQ" marking (no shield mark too), gold pin.

Does anyone knows differnces between those tubes, sonically, lower noise, etc? Thru my search on the internet, I rarely found the information regarding the white labeled but no PQ mark amperex.
Thanks so much
Regards,
atjandra888
atjandra888

Showing 1 response by s23chang

s23chang
620 posts
 
PQ stands for Premium Qaulity
The 7308s are the low noise version of 6DJ8.
Sonically, they're quite different.
To my ears, the Amperex 7308s are more flat sounding to 6DJ8s. I use the 7308s strickly for phono stage.
You can find lots of information from audioasylum website.
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