Stock Marshall Tube Codes

[Thoma]

I bought this 6100LE 30th Anniversary Amp in like new condition about 20 years ago.
Any ideas what these codes mean and who the tube manufacturer was?

 

[johnnyquest]

D DX

 

[Tom Drouhard]

nice one dooley

these were in my 89 2204 when i got it years ago. they look chinese to me
dunno anything about them. maybe Marshall maybe not
ECC83M

Those are the best Chinese ECC 83s made

 

[ITburst]

Lots of great information here and just in time for me looking for a back up set of valves for my DSL20HR.
I had emailed Marshall to ask which valves they actually use in the current head as I was not yet ready to start opening my amp up. Their reply:
VLVE-00105 EL34 JJ Power valves x2
VLVE-00067 x2 JJ Pre Amp
VLVE-00066 x1 JJ Pre Amp

This morning I had a look and the numbers are ALMOST the same except the first zero of all the valves in my amp are “9’s” and not the zero as Marshall’s email quotes. (the list here also has zeros and not 9”’s”like my amp)
Dated either 04/21 or 05/21. Is this simply an updated part number or has the valve actually been upgrade? Does it matter if I want the same sound when I buy the next set?

Also the power valves are VLVE-90105 and the list here only gets to 00101. Any update as to my 90105’s? EL34’s of some sort I guess.

And lastly, Marshall’s email quotes 00067 x2, and 00066 x1. The list here describes them as the exact same thing, ECC83S JJ Low Microphony Red Logo?

Can anyone confirm or sort this for me? Many thanks.

 

[PelliX]

Lots of great information here and just in time for me looking for a back up set of valves for my DSL20HR.

Just get a set of JJ's. Low microphony for V1, the rest is pretty much any two ECC83's and a pair of EL34's. Matched to be on the safe side, no disaster if they're not (within reason). Also, you can tame your Red channel with an ECC823 (half ECC83, half ECC82). Check them out, maybe.

Dated either 04/21 or 05/21. Is this simply an updated part number or has the valve actually been upgrade? Does it matter if I want the same sound when I buy the next set?

I haven't been able to determine any difference between the 9xxxx and 0xxxx for these. Maybe I'm missing something, but then so are my ears. Possible, though. I wouldn't worry about it, honestly. Marshall branded JJ's probably cost more than the 'regular' ones with no benefit except the 'coolness factor' in having Marshall stamped on the valves. I don't care for that, but I guess some do - all good.

Also the power valves are VLVE-90105 and the list here only gets to 00101. Any update as to my 90105’s? EL34’s of some sort I guess.

My DSL20 is a bit older than yours, but Marshall generally left the JJ sticker on the base of the EL34's. Do yours have this? If so, there's your answer.

And lastly, Marshall’s email quotes 00067 x2, and 00066 x1. The list here describes them as the exact same thing, ECC83S JJ Low Microphony Red Logo?

Yup.

 

[ITburst]

Also, you can tame your Red channel with an ECC823 (half ECC83, half ECC82). Check them out, maybe.

I wouldn’t mind cutting some of the gain on the red side. I actually use the green channel 80% of the time and if I use the red channel it’s probably never past 10 or 11 o’clock.

 

[PelliX]

I wouldn’t mind cutting some of the gain on the red side. I actually use the green channel 80% of the time and if I use the red channel it’s probably never past 10 or 11 o’clock.

Then by all means check out the ECC823. It certainly flips my switch, and I'm not the only one around here, either.

If you don't dig it, keep the valve as a spare for testing or for if/when you run into an amp where it does 'work for you'.

 

[ITburst]

Then by all means check out the ECC823. It certainly flips my switch, and I'm not the only one around here, either.

If you don't dig it, keep the valve as a spare for testing or for if/when you run into an amp where it does 'work for you'.

Thanks for the advice! Cheers
There is a place just a short drive away from me, “The Tube Store” in Hamilton Ontario.
They have stock on the JJ’s. I think I’ll pick some up.
They don’t show the ECC823, but there is a ECC83 MG (Mid Gain). I will ask if that’s the same thing when I order them.

 

[PelliX]

They don’t show the ECC823, but there is a ECC83 MG (Mid Gain). I will ask if that’s the same thing when I order them.

Negative, that's probably an ECC82 which will also 'tame' your Green channel - you don't really want that, most likely. As you said, Green is OK as is. The reason you need an ECC823 is because one of the triodes in the valve is used on the Green and the other on the Red channel. They should be able to get hold of one - they're just JJ valves like any others.

 

[PiZet]

Great info. Thanks.

 

[StingRay85]

Not listed yet: VLVE-00035 in an Ei ECC83 long plate.

 

[lesexypaul82]

Forgive my noobness but what would a VLVE-00049 12AX7B/ECC83 Shuguang High Microphony Gold Logo be being used for in a JCM800 4210?
Its the only one there the rest are JJ's with a gold balanced JJ in phase inverter..

 

[Setneck]

I bought this 6100LE 30th Anniversary Amp in like new condition about 20 years ago.
Any ideas what these codes mean and who the tube manufacturer was?

View attachment 109229

These are genuine Tesla EL34's. Keep them if they still work fine. Great sounding tubes, becoming very rare those times...

Regards, ANdy