Burning Amp BA-3

[Zen Mod]

do you know output impedance of La Drek Vecteur ?

Pearl (if I'm looking at proper schematic) could be (almost ) happy to drive 10K pot

 

[Abx74]

Unfortunatly no... anyway I will try and see...

Thanks Zen Mod

 

[Abx74]

Hi, my CD player seems to be happy driving a 10ko pot.
I use now a TKD 2CP2511 insteaf of a Tocos RV24... what a gap !

Damien

 

[wengtech]

hello,
i just curious how will the sound be, if we connect the sony vfet pt.2 front end
with ba3 output stages, would it be a better burning amp??

is it possible to wire like the schematics below?
(sorry for quick and dirty draw)

thanks.

 

[wengtech]

Sorry

There should be no feedback for ba3 output
So i think the feedback connection from vfet front end should be disconnected.

 

[luvdunhill]

I think my output stage could implement this directly, I should check. You would need to use TO-3 devices, but the bias circuit from the VFET amplifiers should work just fine.

 

[6L6]

If the BA-3 front end was cascoded, you would have essentially what you've drawn.

 

[MASantos]

If the BA-3 front end was cascoded, you would have essentially what you've drawn.

Doesn't the BA3 front end have higher gain than the sony vet FE?

 

[Itsmee]

sony vfet pt.2 front end with ba3 output stages, I think you would need to cap couple the the stages together

 

[qwertyl]

BA-3 power supply almost ready

 

[MASantos]

Those are some beefy diode bridges!!!

 

[qwertyl]

Usual diy audio overkill

 

[6L6]

Looks very nice!

 

[qwertyl]

Looks very nice!

Thanks

 

[qwertyl]

Some progress over the weekend...

 

[Blitz]

Currently I am running besides my tubeamps, a F4 (balanced/bridge dual mono blocks) and a F5Tv1.

The F4 are a bit unpractical for my setup, I need gain. So, what would you suggest ?

I am thinking to cripple the f4 so that they basically are like the ba-2 output and have the Ba-3 directly driving them. The key question: Go with a balanced / bridged setup again, so using one stereo ba-3 in balanced mode to drive two crippled f4 bridged ? Or parallel the output-boards and have a "normal Ba-3" ?

 

[6L6]

Make a Balanced BA-3 front end into a preamp. That will have enough gain to drive the F4 to clipping.

Drive the F4s with that preamp. Don't cripple the F4, they sound the same wether the buffer is there or not.

 

[Blitz]

So, your BA-3 sounds identical to your F4+Ba-Preamp ?

 

[Itsmee]

Make a Balanced BA-3 front end into a preamp..

Don't forget about ZM's pumpkin.

 

[6L6]

Of course!

Or SY's Impasse.

All good choices, I suggested the BA-3 bal as he was already thinking about it.