JJ now do a 6SL7 and 6SN7

[bigwill]

I'm personally quite fond of JJ valves and 6SN7s so in my view this is good news, it's also good news that there's another producer of 6SN7s about. I have always hoped they'd make these at some point. Also new from them is their 12BH7.

Link: JJ Electronic - 6SN7

 

[FullRangeMan]

Well I dont know what to say, came to mind that octals fame.

 

[bigwill]

Well I dont know what to say, came to mind that octals fame.

I've personally had good luck with JJs 🙂

 

[hpeter]

2a3 have some balls, i run russian drivers now. i may come back to ecc83

i´d like to see filament 6sn7, enough pins there to make it happen....cylindrical anodes please

 

[DocOct]

These are using the triodes from their ECC803s and ECC802s tubes.

 

[rongon]

These are using the triodes from their ECC803s and ECC802s tubes.

If the triode assemblies inside their 6SN7 are the same as they use for their ECC802, and if their ECC802 is basically a 12AU7 (ECC82), then that would make their 6SN7 an 'octal 12AU7.' Is that 'good'?

Then again, a 12AU7 uses 6.3V 300mA for its heater, while a 6SN7 uses 6.3V 600mA. So they can't be *exactly* the same.
--

 

[hpeter]

people were talking that jj 2a3=300b, guess what?
they do not bias same.

 

[DocOct]

Another question is if their 6sl7 has a gain of 70 or 100. The plates are the same, the filament and grid wind may be slightly different. They can use much of their existing equipment to make these new tubes. I have used their 6sn7 tubes and they work well. Maybe a filament current measurement is in order.