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A chance to own Mullard XF1 tubes but....

142.184.188.114
Posted on June 21, 2020 at 04:16:56
audiophilewannabe
Audiophile

Posts: 640
Location: toronto
Joined: July 19, 2004
 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.

 

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Maybe just me..., posted on June 21, 2020 at 06:01:49
Ivan303
Audiophile

Posts: 48887
Location: Cadiere d'azur FRANCE - Santa Fe, NM
Joined: February 26, 2001
 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.




First they came for the dumb-asses
And I did not speak out
Because I was not a dumb-ass

 

RE: A chance to own Mullard XF1 tubes but...., posted on June 22, 2020 at 04:46:38
Story
Audiophile

Posts: 10431
Location: NJ
Joined: December 11, 2000
 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



 

RE: A chance to own Mullard XF1 tubes but...., posted on June 22, 2020 at 09:07:52
audiophilewannabe
Audiophile

Posts: 640
Location: toronto
Joined: July 19, 2004
 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.

 

RE: A chance to own Mullard XF1 tubes but...., posted on June 30, 2020 at 14:20:16
BillWojo
Audiophile

Posts: 186
Location: NJ
Joined: July 7, 2017
 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

 

RE: A chance to own Mullard XF1 tubes but...., posted on July 15, 2020 at 03:47:35
lutesj@shaw.ca
 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.

 

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