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Best 300B

Can anyone compare the new Genelex PX300B tube to either Svetlana 300B's, Western Electric 300B's, Sophia 300B mesh plates,newer KR300B tubes or Electro Harmonix 300B's.

From my experience the Svetlanas sound a lot like the Western Electric 300B reissues. New KR300b's are better than the older KR VV32B's, KR VV300B's or KR VV302B's and all the above are better than Electro Harmonix 300B's

My Sophia Mesh Plates sounded very good in my Manley Retros but after several listening sessions I put them back in their boxes because the bias kept changing at the recommended setting. Whenever I get around to it I'm going to compare them to others in one of my self biasing amps.

Thanks in advance,
Ron
vv32bl
abill
80 posts
 
Montejay,
I have the paperwork that has the serial numbers and the date of manufacture.
I'm at work now but if you want to know the exact date I can look tonight when I get home.
brf
1,715 posts
 
Don't take a risk with the KR 300B XLS and go out and purchase a pair of Emission Labs 300b XLS and don't look back!!
montejay
285 posts
 
Thanks Abill,
I was more interested in how I can confirm when the KR tubes were made should I come across a nos pair available.They really are magic with the Franks but I have, like you, been victim of newer production reliabilty.

Regards,
abill
80 posts
 
Montejay,

I checked the date of manufacture, I was off a little.
The date is 5-3-2001 and 2-3-2001 , the test results on each tube are 99% the same.

YMMV but in my system they sound very good .
montejay
285 posts
 
Thanks Abill,
I'm sure your 300b tubes played a large part when Coincident developed the Frankensteins and their current speaker lineup.
I have a good idea how suberb your system must sound.

Enjoy,
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