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3 Mullard XF1 with date codes 1958, 1960 and 1961. All three have good readings. Would they work nicely with my Qyuicksilver SET? I normally see them being sold as pairs with the same date codes. In these case they are made in different years; would I ran into problems?
Thanks in advance.
Follow Ups:
Hi,
Just noticed your post.I have a pair of 1958 Mullards XF1's if you're interested in acquisition.I have a 300B amp and do not need these tubes.
They test NOS and test results would be provided.I'm in Sault Ste. Marie Ontario.
I'm a Canuckaudiomart member if you would like to check my feedback.
Advise if interested and have a good day, Mark Watkiss.
if they are truly xf1's and test good, you should have no problem if running SET. All you have to do is set the proper bias.
Pairs are sold for push-pull amps
*Meters!
They are truly XF1 brown fat bottoms. Although one of them seems to have a lighter brown bottom. The 2 have the darker ones. Thought about getting them to match. All I need is one for each monoblock. I wonder if they would blow me away sonically. I mean they are very sought after.
I have a quad of them, not sure what XF version without digging them out though. They are used pulls from a Dynaco 70 I picked up at a flea market. I use them if I want to see what a compatible SE amp can really do. They always sound better than any other tubes I have used. One day I'll have to gather them up and test em on a good tester. Only tested for shorts on my cheap tube tester.
BillWojo
I have a matched quad of new-testing Mullard EL-34 with XF-3 codes but labeled Amperex and prefer the Amperex 'flat top' EL-34, at least in PP Ultralinear applications.
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