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Zaerix ECC83 (12AX7)
Zaerix ECC83 (12AX7)
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Old 19th October 2017, 11:30 PM   #1
victor dascalu is offline victor dascalu  Romania
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Default Zaerix ECC83 (12AX7)

I have a pair of Zaerix ECC83/12AX7. They have the following codes:
69
E49

Can anyone identify them?
What is the meaning of those codes?
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Last edited by victor dascalu; 20th October 2017 at 12:45 AM.
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Old 20th October 2017, 02:37 AM   #2
audiowize is offline audiowize  United States
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What does the top of the glass look like?
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Old 20th October 2017, 08:09 PM   #3
v4lve lover is offline v4lve lover  Netherlands
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Zaerix ECC83 (12AX7)
Check the factory code against the Philips database, Looks like Philips to me. Possibly non European manufacture (South America or BEL India), the absence of copper plated lead through wires kind of rules out Tungsgram as a manufacturer.
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Old 21st October 2017, 07:51 PM   #4
barretter is offline barretter  United Kingdom
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They're not Philips codes. The only 69 in that list is an E91AA. Zaerix rebadged valves from all over the place. A lot of their ECC83s came from the former East Germany, but they tend to have "Made in the GDR" stamped on them.
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Old 21st October 2017, 09:34 PM   #5
v4lve lover is offline v4lve lover  Netherlands
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Zaerix ECC83 (12AX7)
RFT used mostly copper plated lead through wires. Plus they never used the Philips plate shape

My guess is tungsgram
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Old 24th October 2017, 08:25 AM   #6
victor dascalu is offline victor dascalu  Romania
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Quote:
Originally Posted by audiowize View Post
What does the top of the glass look like?
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Old 24th October 2017, 09:48 AM   #7
316a is offline 316a  England
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Bharat Electronics (B.E.L) , India is the most probable manufacturer of this valve .

316a
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Old 24th October 2017, 10:37 AM   #8
DF96 is offline DF96  England
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The glass was definitely made using Philips tooling, but not necessarily in a Philips group factory. The seams are the giveaway.

In the latter years of the valve era many Philips valves were made elsewhere, and some of these overseas factories were rather careless in how they applied the factory code.

Z&I Aero Services were a British rebrander. Most of their valves came from Russia or Eastern Europe, but they would buy what they could.
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Old 25th October 2017, 02:02 PM   #9
victor dascalu is offline victor dascalu  Romania
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The answer is: are they reliable and smooth sounding like philips...or not ?
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Old 25th October 2017, 02:23 PM   #10
Merlinb is offline Merlinb  United Kingdom
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The answer is: are they reliable
They were cheap rebrands, so statistically the answer is more likely to be "not as reliable".

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Originally Posted by victordascalescu54 View Post
smooth sounding like philips
lol
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