New PassDIY Headphone Amp (now available)

[WalterW]

Yep, Meldano, you are an expert in PCb design!
What is that 'omega' shaped wooden thing on your desk?

 

[EUVL]

http://p-fst1.pixstatic.com/51bcdf36d9127e2677001367._w.540_s.fit_.JPEG


Patrick

 

[WalterW]

AHA.....

 

[carsten.witt]

Hi all,
can i use at R11/R19 and R26/R31 a 510R resistor, thanks?

 

[WalterW]

of course, it's just a gate stopper.

 

[carsten.witt]

Ok, thanks!

 

[meldano]

I decrease the resistors to increase the bias (from 10R to 5R).
Fantastic That is a wonderfull sound. With OPA627 and more current I am very happy!

 

[WalterW]

Yes, I thought it was just suggestion that I heard an improvement with increasing the bias....

 

[Algar_emi]

Just made my own today, since the original is not in store yet
More or less as 6L6 original design, and I followed the published original schematic.

 

[meldano]

I am not alone

 

[meldano]

Actual build my case

 

[generg]

You must have Big ears, when I see your PSU......



Really heavy build, congratulation!

 

[blackdod]

It´s a good idea use the off-board cooling.

I would like start my amp the next month but in this moment I thinking on the PSU. I would like use a Sigma 22 for this amp.

 

[Algar_emi]

Hi Meldano. Well mine is nothing like yours? Did you used the same power supply as the Xpre preamp we did? I'm S.Bergeron from Canada

SB

 

[meldano]

I am using a dual supply with capmultiplier and lm1086 for each channel.

 

[meldano]

You must have Big ears, when I see your PSU......



Really heavy build, congratulation!

Very big ears my friend

 

[meldano]

Here is the PSU

 

[Algar_emi]

That's serious supply!

 

[kamis]

Silvian, I know your work and I am sorry to say that this project is not up to your skill level.

 

[Algar_emi]

Hi Kamis. I don't mind. I building this little kit mostly with parts I have in stock, including the case. Hence it won't break the bank and if it sounds good, I can always use on other good sounding cans amp.