my EL84 pre-amp with schematic

[AudioGeek]

pleas comment on my schematic...

any problems????

should I increase the 150v?? maybe to 200v?

I want to use a regulated power supply (VR tubes) so thats why 150 was picked.

recommendations for power supply???

dunno about SS, hybrid or tube rectified..

 

[fdegrove]

Hi,

pleas comment on my schematic...

Hmmmm....why so complicated?

Am I correct in assuming you're trying to make some sort of mu-follower combining a choke and FET?

Why not just use a choke as a plate load, take the signal off the plate and use a VR tube to clamp the B+?

You can use the loadlines from the 12B4A if you like, a trioded EL84 is very similar...Maybe wire it for ETM as well?
Zout would be in the 1K zone if that's what you want.


Cheers,😉

 

[AudioGeek]

ETM?

What is ETM? and what is its advantages??


Do you think a choke loaded triode EL84 would "sound" better than a triode EL84 with a MOSFET source follower in a mu configuration??

Do I get any advantages of the mu over just a choke load??

Any PSU recommendations???

 

[analog_sa]

ETM?

Do you think a choke loaded triode EL84 would "sound" better

Yes

Do I get any advantages of the mu over just a choke load??

Not really.