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NOS GE 6CA7 vs cheaper EH or Winged "C" EL34's

I wonder, regarding EL34 tubes, whether NOS GE 6CA7 (which have been emphatically, and warmly, recommended, but which cost upward of $150 each) would really give better sound than say, far cheaper EH, Sovkeks (New Sensor stuff)..or Winged "C" tubes, the latter apparently being far better. Does anyone have experience in tube rolling this type of tube?
It would be for a Conrad-Johnson MV55 amp (paired with a C-J PV10B preamp).
Also, any thoughts on whether the input tubes would make a significant difference.
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albertporter's avatar
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albertporter
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I have some Groove Tube 12AX7's which are excellent for new production. Unfortunately I have not tried the 6CA7 from them. How many 6CA7, EL34 do you require to switch over?
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infotrad OP
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I need 4 6CA7 tubes for my MV55
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albertporter
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Do you want to borrow four Mullard XF2 EL34 to see if that works magic? I don't want to sell them but at least you would know what to buy.
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infotrad OP
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How would this work? And If I wanted to purchase them, how much would you ask?
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albertporter
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I was just offering to let you listen and you could buy at Ebay or wherever if you liked the Mullard sound. You would be responsible for shipping cost to and from.

I think they are the best 6CA7/EL34 there is, but unless you hear them you have no way of knowing. Option two is just buy some from a tube dealer or Ebay and have them in inventory.

Mullard will be needed someday, I guarantee. That is if you stay with tube equipment. They work too well in too many pieces to be without.
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