Joule Eletra LA 100 MKIII

I stand corrected. I knew there was battery bias in my LA150, but I thought that was just a matter of replacing the battery at some point. Sorry for my misleading comments.

The batteries in the Joule preamplifier are under no load and don't really have an effect on the bias settings used for the line stage. They will last many years. You don't really need two meters to set the bias... I normally do it with one DMM. I have LA 100 bias instructions scanned as a jpeg which I can email. They are not easy to make sense of (a diagram of the line stage board with some numbers scrawled on it), but they get the job done. It does require poking leads on points of the circuit board (there are no easy access test points to stick your meter), so one does need to tame appropriate care when poking around inside a live tube preamplifier.

Geez, I never knew that was an option. I had the LA150 MKII SIgnature Edition - same thing with it?

Sorry for getting back to this late.. The LA-150 line stages do have bias adjustments. They are not meant to be constantly fiddled with though (like on the LA-100), if memory serves bias instructions are not included with the preamp.

Hi
Can someone share a copy of the 100 MK3 manual / scheme, or any other model 100 pre-amp manual / info  ?
 thanks much