Upgrading my Sovtek 6922 vacuum tubes

Petg60:

Mullard Blackburn produced dimpled disc getter ecc88/6dj8's.  

They are more common than the Mitcham (ddg) e88cc/6922, and they have a fuller sound than the Holland (ddg) ecc88 production.

DeKay 

Petgo60:

PS:

Your warning about using ecc88/6dj8's in an e88cc/6922 design is a good one, but it may only apply to a few popular companies (and their designs) which ran the 6922 type especially
 hard (otherwise known as tube eaters).

Off the top of my head this would be ARC, Sonic Frontiers, later CJ's and Audible Illusions*.

The older AI preamps (due to their design from what was explained to - which was over my head) were privy to AC line voltage in this respect in that a higher line voltage feeding the unit the harder on the tubes.

This may explain the wide opinions of what tubes can and/or will not last in the units.

There are also old production ecc88/6dj8's which do survive in some of these supposed tube eater models (Siemens/Tungsram come to mind) that I used in ARC and AI units with success.

However, the problem with both was that I (and the owners) did not care for the sound which was harmonically dry.

Best not to write off the use of vintage 6dj8's (in a 6922 design) on anywhere near a whole as they may very well be fine/long lasting in gobs of gear.

DeKay

Hi,
@dekay, Blackburn did make ecc88 a frames with ddg and indeed sounded warmer with better mids than both versions of Holland made ones. I was refering to Mitcham factory only for the ddg E88CC variants. I own SF and i know that an ecc88 will not have a chance in these units and some others too, that's why i believe the e88cc is the better bet valve for audio use from this family.

I'm curious as to what BJ rec's for the OP's gear...

Hope the OP posts an update/take.

DeKay

Brent Jesse recommended  Amperex Bugleboy Logo 6DJ8's ($110)
Should get them on Tuesday. I'll let you know how they work
with my system.