Can i use a tangsol 7581a instead of el34 in audio innovations 500?

[philv]

As per title.

Thanks

[Lawrence001]

Some discussion on here, personally I wouldn't risk it

https://www.hifiwigwam.com/threads/el34-replacement-7581a.89155/

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[philv]

Thanks.
Saw that but inconclusive.

[struth]

seems a few of folk have been using them over the years. id try and speak to a valve expert to get the truth.. mr firebottle might know, if he is around

[philv]

I've spoken to Alan, and been advised not to.
Shame, but it is what it is.