Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: kagliostro on April 29, 2024, 03:43:46 pm

Title: There is an octal tube that can be considered as equivalent of the ECC88 ?
Post by: kagliostro on April 29, 2024, 03:43:46 pm

I would like to know if there is an octal tube that can be considered as equivalent of the ECC88 ?

Thanks

Franco

Title: Re: There is an octal tube that can be considered as equivalent of the ECC88 ?
Post by: tubeswell on April 30, 2024, 06:11:07 pm

Quote from: kagliostro on April 29, 2024, 03:43:46 pm

I would like to know if there is an octal tube that can be considered as equivalent of the ECC88 ?

Thanks

Franco

The ECC88 is a special beast designed for cascodes I think. Don’t know if you’ll find a workable octal version.


The nearest type of tube I can think of that achieves ‘similar’ performance is a 12AU7, and even that is nowhere near ECC88 performance for cascode operation. Others may have other thoughts/views.

Title: Re: There is an octal tube that can be considered as equivalent of the ECC88 ?
Post by: kagliostro on April 30, 2024, 06:36:43 pm

Many Thanks Tubeswell

Franco