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Interpreting tube measurements?

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data:
Hay guys

I ordered a pair of NOS MELZ 6SL7 equivalents to use in my ear clone, the seller stated the following as measurements of the two.

6n9s
N tubes Ia1 Ia2 S1 S2
mA mA mA/V mA/V
1 2.52 2.44 1.64 1.60
15 2.4 2.4 1.64 1.68

What I'm stuck on is the first numbers, being a "1" and the other "15"?

Help a noob out :)

omodo:
I'd suspect it's just the tube number or identifier from his batch/lot of tubes

data:
Thanks, mate :)

I thought it may be that, but being unsure I thought I better check with you guys, one has well matched halves so that one is definitely useful , but it depends on how well the ordinary Russians in there already.. are matched.

Heard good things on the MELZ tubes, should be interesting.

Thanks
Ian

stevenvalve:

--- Quote from: data on September 13, 2014, 08:42:16 AM ---Hay guys

I ordered a pair of NOS MELZ 6SL7 equivalents to use in my ear clone, the seller stated the following as measurements of the two.

6n9s
N tubes Ia1 Ia2 S1 S2
mA mA mA/V mA/V
1 2.52 2.44 1.64 1.60
15 2.4 2.4 1.64 1.68

What I'm stuck on is the first numbers, being a "1" and the other "15"?

Help a noob out :)

--- End quote ---
mA/V......... looks like the valve tester measurements, Milliamp per volt.

data:
Cool, was just unsure of the first numbers.

Hay Steve, have you used these MELZ 6SL7 equivalents?

Do they rate to your ears?

Cheers
Ian

Maybe I should have asked this before placing an order.

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