5879 amp favorites?

[mountainhick]

There's been many builds here using 5879s. I've been perusing quite a few schematics with jschem.

I just got my hands on a conn strobotuner that I'll repurpose as guitar amp. It's tube compliment is really good, 6x4, a pair of 6AQ5, a 12AU7, a 12AT7 and a 5879. I am happy to use a 6N2P anywhere a 12AX7 would be better.

So wondering about 5879 input stage, perhaps another gain stage, 12AT7 PI etc.

I've built one dual channel amp with one channel a 5879 input into paraphase Gibson GA-40 style, though different power amp. Quite like it. Would like to do something different.

So the range of 5879 designs? I am open to other suggestions. What are your favorites using this tube and why?

Not in any way focused on this, but one idea, wondering about 5879 instead of EF86 for matchless/vox kind of thing.

[passaloutre]

Not in any way focused on this, but one idea, wondering about 5879 instead of EF86 for matchless/vox kind of thing.

I recently did an all "American tube" version of the AC15/Spitfire using an old BH Filmosound amp with 5879,12AX7,6V6,5Y3. I have some noise issues to work out in the tiny chassis, but overall it's a nice round, less-compressed tone than the "English tube" Spitfire I made prior.

[TIMBO]

This one is worth doing
5879 Blues Bassman

[kagliostro]

Gibson Les Paul GA 40

https://el34world.com/charts/Schematics/files/Gibson/Gibson_les_paul_ga_40.pdf


Sorry, I missed you want to change from the GA 40

Franco

[mountainhick]

This one is worth doing
5879 Blues Bassman

I have found another version in the Jschem forum, looks potentially desirable, and easy enough to adapt to 6AQ5s.

TIMBO, what's your take on a 12AT7 as PI in that design? Have my own thoughts, but would like to hear others' take on it.

[mountainhick]

Gibson Les Paul GA 40

https://el34world.com/charts/Schematics/files/Gibson/Gibson_les_paul_ga_40.pdf

Sorry, I miss ed you want to change from the GA 40

Franco

No worries, Yep been there, done that, and will again, but with 6SJ7s.

[SoundmasterG]

Use the 5879 as the second stage instead of the first stage. You get more of the good pentode effects without all the microphonic instability that pentodes often give. Merlin has a lot about it in his books and he's right.

Greg

[mountainhick]

Use the 5879 as the second stage instead of the first stage. You get more of the good pentode effects without all the microphonic instability that pentodes often give. Merlin has a lot about it in his books and he's right.

Greg

Any examples/schematics that use no more than three 9 pin tubes for preamp and PI?