Mullard ECC83 valve identification.

[walpurgis]

Anybody recognise these NOS unused ECC83 valves? Are they genuine and worth using?

I have no idea where I got them from, just found during a rummage. I have no current use for them.

https://i.ibb.co/Jy2n79y/DSC-0005.jpg (https://ibb.co/HxY7zjx)

[Barry]

The packaging is marked in Cyrillic as 6N1P - BE, yet the valve(s) shown is/are Mullard, and marked as 'Made in England'.

I would thought it unlikely that Russia would go to bother of forging valves: that underhand activity is left to the Chinese.

[Lawrence001]

I was initially baffled as I've never seen such short plates on an ECC83. But then I put 2 and 2 together (some people mistakenly claim the 6N1P is equivalent to an ECC88, but the closest is the 6N23P) and realised they are ECC88s but the print has rubbed so it looks like ECC83.

See these:

https://www.langrex.co.uk/products/ecc88-mullard-grey-plate-o-getter-nos-valve-tube-lc52/

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[Lawrence001]

Oh and they are worth using, they'd work a treat in my Consonance pre which currently has 2x Sovtek 6922s!

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[Lawrence001]

Identical valves here, you can just see the halo getter in photo 5

https://www.ebay.co.uk/itm/256189716115

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[walpurgis]

You are right Lawrence. On closer inspection I can see they are definitely ECC88, more clearly so on the second valve, which does not have the logo displayed in the photo. Thanks mate! :).

I suppose I'd better sell them, they're just wasting their time here.

(just a thought, I'll have a look inside my VTL Deluxe pre-amp and see if that uses them, if so they can go with it when I move it on)

[Barry]

Your post confused me - I thought you were querying why the Mullard valves had Russian packaging. Had I thought about it more, the designation 6N1P (or in Cryllic 6H1П) is the rough equivalent of an ECC88.

So not a query about Russian clones, rather confusion between what looked to be designated as ECC83 rather than ECC88.

[walpurgis]

That makes things more puzzling :scratch:.

Would they just be proper Mullards stored in wrong packaging or Russian ECC88 clones/copies/fakes?

[Lawrence001]

They're genuine it wouldn't be worth faking them and definitely not Russian made.

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[Barry]

That makes things more puzzling :scratch:.

Would they just be proper Mullards stored in wrong packaging or Russian ECC88 clones/copies/fakes?

I believe it the first suggestion - the wrong packaging has been used (and incorrectly marked).

[struth]

look genuine. just likely stored as 6n1p boxes pro bably had no real mullard boxes

[Barry]

Agreed. :)

[Lawrence001]

I believe it the first suggestion - the wrong packaging has been used (and incorrectly marked).I'm very interested in your incorrectly marked point Barry, could you explain?

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[Lawrence001]

look genuine. just likely stored as 6n1p boxes pro bably had no real mullard boxesIf you took some of my valves out of the boxes based solely on the labels without checking first and plugged them in you'd soon regret it [emoji23]

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[Barry]

I'm very interested in your incorrectly marked point Barry, could you explain?

Well I may be opening a can of worms here - but here goes:

According to the Mullard Maintenance Manual, 2nd Ed. (1961) an alternative designation for the ECC88 is 6DJ8. Other equivalent designations are 6922 and CV5385. The direct Russian equivalent is the 2N23P (or in Cyrillic 2H23П).

Some claim the 6N1P-EV (or in Cryllic 6H1П - BИ) is an alternative equivalent (and the is the designation marked on the packaging for Geoff's Mullard ECC88), but others disagree: https://www.diyaudio.com/community/threads/difference-between-6n1p-and-6n23p.272947/, but although "similar", some actually prefer the sound of the 6N1P. Technically, the heater of the 6N1P draws about double the current of the 2N23P, and requires a higher anode load.



It ought to be pointed out that the designation ECC88 and E88CC are sometimes used synonymously, but strictly speaking that is not quite correct. As far as as specification is concerned they are identical, but the E88CC is built to a higher standard.

The Mullard Technical Handbook, Book 2, Valves and tubes, Part 1 (November 1970), Section F describes the E88CC as a 'Special Quality Double Triode for cascode circuits μ = 33'.

Alternative designations for the E88CC are 6922 (and of course 6N23P, as the two are electically identical). Other versions are E88CC/01 (equivalent to CV2493), and in Germany "CCa", a designation use by Siemens & Halske, Telefunken and by Lorentz in the '50s and '60s.

https://theartofsound.net/forum/showthread.php?3285-On-The-Net-Valve-Databases

[Lawrence001]

Well I may be opening a can of worms here - but here goes:

According to the Mullard Maintenance Manual, 2nd Ed. (1961) an alternative designation for the ECC88 is 6DJ8. Other equivalent designations are 6922 and CV5385. The direct Russian equivalent is the 2N23P (or in Cyrillic 2H23П).

Some claim the 6N1P-EV (or in Cryllic 6H1П - BИ) is an alternative equivalent (and the is the designation marked on the packaging for Geoff's Mullard ECC88), but others disagree: https://www.diyaudio.com/community/threads/difference-between-6n1p-and-6n23p.272947/, but although "similar", some actually prefer the sound of the 6N1P. Technically, the heater of the 6N1P draws about double the current of the 2N23P, and requires a higher anode load.



It ought to be pointed out that the designation ECC88 and E88CC are sometimes used synonymously, but strictly speaking that is not quite correct. As far as as specification is concerned they are identical, but the E88CC is built to a higher standard.

The Mullard Technical Handbook, Book 2, Valves and tubes, Part 1 (November 1970), Section F describes the E88CC as a 'Special Quality Double Triode for cascode circuits μ = 33'.

Alternative designations for the E88CC are 6922 (and of course 6N23P, as the two are electically identical). Other versions are E88CC/01 (equivalent to CV2493), and in Germany "CCa", a designation use by Siemens & Halske, Telefunken and by Lorentz in the '50s and '60s.

https://theartofsound.net/forum/showthread.php?3285-On-The-Net-Valve-DatabasesAh so I think you just meant the markings on the box were not related to the actual valves Geoff found in the boxes rather than being an incorrect Russian valve type.

The valves that would have been in the box originally (6N1P-VI or 6H1П - BИ) are a variant designed for pulse applications by the military (radar/transponders?).

The 6N1P-EV rugged variant would be 6H1П-EB in Cyrillic.

There's some more detail on here for anyone interested.

https://www.valveamp.co.uk/valves.html

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