PLEASE NOTE: We say that you can go as high as 90mv at the test points for the JJ 6L6GC's. This DOES NOT mean that it HAS to be set at 90mv!!!!!! PLEASE read below!!!!

This video is of a Hotrod Deville which has a little higher plate voltage than the Deluxe but the bias recommendations at the test points are just fine for both the Deville and the Deluxe. If you're after maximum headroom then set the bias to about 70mv. If you're after an earlier breakup you can go as high as 90mv. Remember there is no right, wrong or "perfect" bias setting within this range. It's where YOU like it best. I simply want you to have the knowledge to be in control of your tone! Try different settings to see what works best for you.

A word of caution!!! Other brands of 6L6's like the chinese tad tubes and sovtek, Svetlana, EH, and the new tung-sol tubes are ALL sovtek tubes and cannot dissipate as much power as the JJ's so I don't recommend running these any hotter than about 75 to 80 and the gt 6L6ge should not be set higher than 70 or you will burn them up VERY quickly!

These amps vary so not all HRD's will be able to hit 90mv at the test points and if you ask us for power tubes with good headroom we will send a more moderate grade and sometimes these will top out at 75 to 80mv but if its headroom you're after then that is a good place to bias the amp.

A note to JJ 6V6 users; The JJ 6V6's can be biased as high as 45mv at the test points in Hotrod Deluxe's but most of these amps will only hit about 30mv but even at this setting they sound great. If you want to really push them then you need to drop the value of the final bias resister down by about 20%. A bias setting between 30 to 45 is best for the JJ 6V6's.

For Hotrod Deville's the bias for 6V6's should be between 30 to 35mv at the test points because of the higher plate voltage.

The red or positive test lead is the one you want to touch off to the test point shown in the video and in the pic's below. The black lead can simply rest in one of the screw holes on the chassis (very handy) or touch off anywhere on the chassis.