single penthode guitar preamp???

[vasko]

is it possible to make such preamp?

I'd like to use ef80.I also have ecc82 triode.

It has to have gain,treble and bass knob.

I want to use it to attach guitar with PC line in.

[frequencycentral]

Single dual triode is well documented: http://www.diystompboxes.com/smfforum/index.php?topic=63479.0

Or two dual triodes:

http://www.tube-town.net/diy/lov/lov01-vanillaoverdrive-eng.html

http://www.tube-town.net/diy/lov/lov02-peppershredder.html

You could add a Fender or Marshall tonestack.

[Renegadrian]

ATM there's not much about pentodes...I got some and will start breadboarding in a while...Until now, you can find a couple of 6418 projects in the gallery. See if they may be helpful....

Got ECC82??? BUILD A VALVY!!! 

[Jimmy-H]

is it possible to make such preamp?

I'd like to use ef80.I also have ecc82 triode.

It has to have gain,treble and bass knob.

I want to use it to attach guitar with PC line in.

Only found this, but it's with a different tube 6AU6 en 36volt DC : http://jonanderson.mn.googlepages.com/tubebooster

[comfortably_numb]

Should be easy to design using a space charge tube, referencing that schematic.

[vasko]

Jimmy-H ,this got no bass,gain,treble contrtols...and how is this penthode working on 36 V? Usually tubes use 300V...all bellow 100V is "fishy" to me

Got ECC82??? BUILD A VALVY!!! 

is this valvy?  http://www.beavisaudio.com/Projects/ValveCaster/MatsuminValveCaster.gif

same...9V ...no way this is gonna work

[Renegadrian]

GRRRRRRRRRRRRRRRR
How'd you say it cannot work?!?!? Just try one!!!

You have to understand that tubes aren't only for those high voltages...12V can make quite a sound!!!