st-70 Telefunken driver tubes
- Posts : 200
Join date : 2013-11-28
Age : 67
Location : Plainfield, illinois
- Post n°1
Anyone have experience with black diamond ECC82's as drivers in their VTA ST-70?
- Posts : 1689
Join date : 2012-12-25
Location : gothenburg, sweden
- Post n°2
Yes, i have used JJ ECC82 most of the time. ( At start i used NOS from bob but one developedBrap wrote:Anyone have experience with black diamond ECC82's as drivers in their VTA ST-70?
hum thus i replaced them )
At present the JJ ECC82 have been powered app 4000h
( Telefunken black diamond is relabeled JJ )
Now i have measured them, and emission seems to have been reduced to app half ( i never
measured them at install) Thus 4000h seems to be acceptable lifetime.
Now i have replaced with redtop ECC82 ( balanced )
Sound however seems not affected at a first listening.