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Psvane 300-B Tubes ? ? ?

Does anyone out there have any experience with Psvane 300-B MKII or their WE300-B Replica tubes ?  

I found the best sound from initially the Sophia Princess mesh-plate 300-B's, then their Royal Princess 300-B's however I'm definitely NOT happy with their reliability, especially the Royal Princess !  
I had a mesh-plate from new have a glowing spot on the mesh-plate, and they told me it was from sitting on the shelf for over a year !  REALLY ! ? ! ?  And I had two Royal Princess tubes go out with less than 600-hours on them, unfortunately well-past 1-yr. warranty.  Left a bad taste...  I'm NOT going back...  
I've tried EH gold-grid 300-B's, Gold-Lion's, JJ's...  All sound somewhat different but the Sophias sounded the best, however in my experience, reliability is questionable...  Thanks...  John  
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Showing 1 response by trelja

trelja
3,223 posts
 
I served as an importer and reseller of upper end tubes from China...

I preferred both the Shuguang Black Treasure and Psvane 300B tubes over the Sophia Princess (TJ / Tianjin), with the Psvane sounding best.  That said, of the three, the Shuguang Black Treasure offered the most reliability.

BTW, if the sitting on a shelf theory held water, the market for North American and European NOS tubes would obviously not exist
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