[jh[_3_]]

Am 09.02.2013 23:40, schrieb Barry:
wrote in message
...
On a semi-related subject - do you know if the 5751 is equivalent to
the ECC82?


It is essentially a 12AT7 which is vibration resistant. It's filament
current is slightly higher to achieve a more rugged filament.

73, Barry WA4VZQ




???

I always thought is more like a 12AX7 with a little less gain.
It has an internal resistance in the 60kohm range - opposed to 10k of a
12AT7. All datasheet values read more "12AX7ish" than 12At7.

They do a pretty fine job in the input stage of old Fender Tweed amps.
Especially the 5E3 Deluxe.

regards

Jochen