Jadis OR bias value for Mullard RL34 and KT88 help

Mattzack2, thankfully, I've received two replies from Jadis. Both, from principals of the company.

The JOR conforms to the traditional means of calculating bias current. So, the calculations above ARE correct.

Patrick used 150 mV and stated, "the sound will be better but the tubes are not so secure." 150 mV / 5.62 would mean 27 mA of output tube current, still very easy on the tubes.

As I have maintained of late, I don't want to say much here in public regarding my personal experience, as it's prudent to have folks stay within the manufacturer's recommendation.

Understood
Are you the same Joe as your friend in the business by any chance?

No, I think that is Joe Abrams of Equus Audio. I remember his banner ads here on Audiogon.

Please let us know how the amp sounds at 150 mV, and whether you feel the Mullard EL34 should stay.

I plan on doing that this weekend. I will keep you posted. I wish I had a quad of jjel34's to compare.

The JJ that I liked in this amp are the E34L, which do have a much different sound than their EL34.

The JJ EL34 is more typical of EL34 sound, with an evenness of hand from top to bottom. The E34L give up some of the bottom end for a midrange that can be otherworldly in the right setup.