I am a little bit confused. On your chart on p77 on the last line you clearly state that 6BE6, 6CS6, 6BY6 should not be used with EF95 setting without the 2-7 strap. Are you now advocating the EF95 without the strap 2-7 setting for these tubes?
Completely agree with you that the 6AH6 and 6AU6 families are among the best driver tubes for the LD amps. Just finished the 20 hour burn in for my two Sylvania 6AH6 tubes mentioned above on this page. There is none of the Sylvania brightness and these tubes are excellent all around. (Actually these tubes emerge as slightly dark sounding.)
Based on my experience I would say that you should try both the EF92 and the EF95/2-7 strap settings on those tubes that can be used in both modes to see which setting sounds better to you. My pair of TS 6CB6 tubes sounded much better on the EF92 setting than on the previously tried EF95/2-7 strap setting. (I was going to relegate these tubes to my pile of "tried but not true" tubes with the thought of eventually selling them, but now I am definitively keeping them.)
LOL - this is a very civilized forum; the only shooting we do here is to shoot for the stars to get the very best listening experience....
yes, EF95 and no 2/7 strap. Theoretically, a hanging grid seems not the best case scenario. However, for some tubes families people worry, for others they don't and there is no (negative) experience in running heptodes with the EF95 setting. The sound is just best at that setting for my ears and I wouldn't want to sacrifice it due to the technically sub-optimal connection.
Edited by Acapella11 - 5/23/13 at 5:18am