Linlai E 6sn7 tubes

@pinwa NOS tubes are exactly the same with many Sylvania and GE tubes etc. etc. selling under many brand names for exactly the same tube. But the idea that tubes that are internally identical but have different lettering are functionally different seems ludicrous.

REALLY?

My Linlai elite tubes look identical to the ones pictured on Grant Fidelity's site, so I believe pinwa has a point.

I understand what he wrote, but WHY do the tubes sound different?

I have to say that I’ve been confused about global, non global…… Last night I’m doing some listening,and whatever it’s worth,the Linlai’s that I currently run, sound better in my Motherlode II than any other tube I currently own. Now, I’m not saying that I have experience with 100’s of NOS tubes,and I am the ultimate expert.  I am a relative novice in comparison to others that share their knowledge here.  Other than the cathode material incident, these tubes have been silent, and give me a great textured, full spectrum response with a bigger soundstage than I have experienced before. However,we all hear,and desire something a little different.   I mentioned earlier about the value about ordering from a reputable dealer vs ordering from an epay vendor.  That,of course,still stands.  As with most things in life,proceed with caution, and do what you are comfortable with. 

@danmar123   I may have missed out on a thread. Do they sound different?