7025A tube replacement for a Ampeg B15S from 70's

[bsco]

Good morning....I have some 6L6GC tubes here with the same pin out as the 7025A..(pins 1 and 6 not used)....are these tubes safe to use in this application?? plate voltage in the Ampeg is around 540Vdc...I have seen somewhere that they can't handle this voltage level??? I thought that they could but no entirely sure so that is why I came here to ask.....the old rca tube manuals show max. levels which are not quite as high as the plate voltage in this amp....any advice greatly appreciated.....

[glebert]

Do you mean 7027A? That is what I see listed on B15s schematics.

[g1]

Yes, if they are good quality 6L6GC they will work fine in there instead of 7027. The factory bias is quite cold which helps.

[bsco]

Do you mean 7027A? That is what I see listed on B15s schematics.

yes. sorry about 7027A....

[bsco]

my mistake...the original is 7027A........