Hi All
What do you now about this valve a CED 7025 /12ax7 also known as an E7GC7 well here’s my review on this one up ageist the mullard ECC83 /12ax7) at £40.00 ish and the Marconi B339 £65.00 and the 7025 8 quid this valve is as good in every way that the other two I have listed hear in my 12B4a headphone Amp the 7025 just doses its thing and works with jazz/blues but any one know it s history
CED 7025 /12ax7 ?
- colin.hepburn
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- Paul Barker
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#2
useful, ta.
- colin.hepburn
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#3
Hi Paul
this is just in my MHOP on this valve but was hoping for a bit more feedback than useful, ta.
thanks Paul
this is just in my MHOP on this valve but was hoping for a bit more feedback than useful, ta.
thanks Paul
- Paul Barker
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#4
Not had one, theres an unusual thing.
- colin.hepburn
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#5
Hi Paul
Here you go if you want some the valve in the image is not the 7025
http://www.cricklewoodelectronics.com/C ... =23&page=1
Here you go if you want some the valve in the image is not the 7025
http://www.cricklewoodelectronics.com/C ... =23&page=1
- Paul Barker
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#7
t's listed in Vade-Mecum, as American equivalent of ECC83.
Other equivalents
B339
ECC803
ECC893S
E83CC
M8137
QB339
6L13
12ax7
12DF7
12DT7
6057
FF6057
6681
7729
same pinout slightly different performance
12bz7 1.5 watt instead of 1 watt greater filament to cathode potential allowed
Diff pinout
2C52
E283cc
12AK7
7058
diff pinout slightly different performance more s similar mu so lower r
6h2pi
6cc41
Other equivalents
B339
ECC803
ECC893S
E83CC
M8137
QB339
6L13
12ax7
12DF7
12DT7
6057
FF6057
6681
7729
same pinout slightly different performance
12bz7 1.5 watt instead of 1 watt greater filament to cathode potential allowed
Diff pinout
2C52
E283cc
12AK7
7058
diff pinout slightly different performance more s similar mu so lower r
6h2pi
6cc41
- colin.hepburn
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#8
Yes that site isn’t too informative all I can say is it’s labelled as CE not CED. E7GC7 7025/12AX7WA made in Russia by Sovtek 0406 no other markings on it
This link shows the valve but not much info http://www.elderly.com/accessories/items/12AX7WA.htm
This link shows the valve but not much info http://www.elderly.com/accessories/items/12AX7WA.htm
#9
OK, I know it, it's a re-badged modern Sovtek ECC83, I think this was originally derived form their 6N2P.
I've used these and the EI Elites, quite good value for money, the 83 is probably OK in a headphone, I have used them in gain stages for my 300B, better when self loaded.
cheers,
-- Andrew
I've used these and the EI Elites, quite good value for money, the 83 is probably OK in a headphone, I have used them in gain stages for my 300B, better when self loaded.
cheers,
-- Andrew