Thanks for your suggestions, isnt the factory tube in the quicksilver V4 pronounced Shuguang as well. Is this penta one also a chinese tube, and if so would it most likely be superior than the stock (shuguang-I think) KT-88 in the quickies. Where can I find this penta shuguang closed plate KT-88 SC, and I wonder how it would compare to say the KT-90. I know the KT-90 is said to increase the power in the V4, but will they retain the lush and textured midrange of the KT-88.
KT-88/ 90 choices to replace my new stock tubes
I am trying to decide on one of these tube types for a new pais of quicksilver V4 amps I just bought. The stock tubes sound good, but I feel they can be improved upon. My frontrunner is the JJ tesla KT 88 ( around $75 a pair) , having had good results with this tube previously with another amp. I am also considering the EI KT-90 , which I heard was quite good with the exception of the newest ones( mark 3 perhaps). I am open minded and the JJ tesla price range is fine, but I dont want to spend too much over their asking price.Thanks in advance.