ef861 - guitar preamp

[emosms]

Hi, I am working on the pentode chanel of a voxac15 heritage schematics
ef86, ecc83, 2xEL84
mine is>
ef85, 6n2p, 2x6p14p
I found an alternative pentode preamp schematics with ef85, but not content with the result.
Not a half of the highs and the compression:
Vox AC15 Heritage Handwired - YouTube
Is it possible to work out something with some of these
ef861 (got them today)
ef184
6j1p (russian 7 pin pentode)

Еspecially with ef861, dont know where to start from about the design.
Hard to find any audio schematics with it (I know it is not its designation)
Greets

 

[emosms]

no one tried ef861 for audio?
no one ever found something suitable to replace ef86?
is that the only audio (pre-stage) pentode in the universe?

 

[leadbelly]

no one tried ef861 for audio?

EF861 is similar to E180F and 6688, which if you search you will see are well thought of and used for audio.

 

[emosms]

not used to look at the number only named (6688)
I thing I searched for e180f, but not much
guitar preamp usage?