Eps, to be truthful, when would I bias my Jadis Orchestra
Reference, it never needed as much adjustment as I expected.
In fact, I just switched from Ei KT90 to JJ E34L, and despite the monumental difference in tubes, I was astonished about how close to being in the new tubes actually were. They were just outside of spec (89 mV, range is 95 - 120 mV, preferably 110 mv), which is probably not that big a deal.
Hopefully, Pierre will chime in on biasing.
I would like to offer that if the DA5 uses the same procedure as the JOR, I have created a document, complete with pictures (because they are truly worth a thousand words) on the bias procedure. It's probably six pages, with maybe 8 or so pictures. I would be more than happy to publish it here on Audiogon.
I had received a document from Jadis, but it was not very intuitive. Because I was selling the amp to Springbok10, I wanted to be sure that the procedure was crystal clear (and again, a picture is worth a thousand words).
In my opinion, the biasing itself, once learned (not at all intuitive), is incredibly easy (the pictures make it easy, even for a first timer). The difficulty lies in that you must remove the bottom and sides with the JOR. It's the reassembly that I HATED! Knowing what I know now, I would drill holes (there are already a lot of holes there already) that line up with the resistors and potentiometers, making it a simple, 3 minute procedure. No muss, no fuss.
