Bijou All Tube Futterman Headphone Amplifier - Page 266

 

Hey there, Thomas, 

 

For starters, you should read up at the designer's site about the Bijou if you haven't already.  That is here.  

 

However, regarding moving to 12XXX tubes Alex says, 

 

Edited by bhjazz - 1/28/12 at 11:08pm

Oh noes! I have pretty much all of the parts ordered already an now i get to know the amp doesn't do that well with Grados :[

 

What do I do now? Should have gone with EHHA?

 

The new HD700s look nice, how would Bijou do with 150ohm phones?

 

Edit: Solution; get Beyerdynamic Tesla1 and finish the project like a boss! Pictures when it's ready! Could take months though

Edited by Kirnupiima - 2/14/12 at 7:58am

Ivé built my bijou as dual mono with 2 hammond 370 daz.

Ive done regals mods, increased size of caps in the audio circut and replaced elyts with film caps.

Ivé also removed the cathode bypas caps and done regals mod.

 

I know Im only using half of the aviable current from the PS, so the question  is what I should du with the remaining power. I thought of using paralell ecc99s in the output stage to lower zout, but I dont think it makes sense since Im using it as a preamp most of the time, or does it?

 

Right know Im considering a pretty hot biased 6n30p input stage, but I know  that I will loose gain, and right now I like the amp with full nfb wich barely gives me any gain. Maybe an extra gain stage would do the trick? But I gues I have to add 2 stages if I want to keep the global nfb(?).

 

Maybe its a better idea to increase gain på loading the 6n30p with a constant current source?

 

Is there any other tubes I could try as output tubes? Already tried 6n6p but didn´t like it.

 

 

Im thankfull for any comments on my thoughts and suggestions for mods.

 

 

Hi all, i dont have much experience with electrical stuff although I DIY my own bijou. I have a lcd-2 with me and i understand OTL would not drive low imp to full potential.

 

But i'd like to know whats the power output of bijou at its default configuration? I've tried searching on this forum but did not find anything on output power.

Hello everyone!! It took me 2 days but I have finished lurking all 266 pages of this thread.

Let me give you some background on me... I am in the navy and have gone through school for micro miniature electronic repair (m2) I am savvy as far as building one of these goes...

I am very new to the hifi world. I was completely content with an iPod and Bose headphones till my friend decided it would be a good idea to ruin it all by showing me a Cowon d2 with a fiio e11 on ath-m50... Ruined me forever! Now I want to build one of these!

Can you tell me if this kit is going to be good enough right out of the box or will I want to upgrade it as soon as I turn it on... Can you give me a list of the easiest and most affordable upgrades. I am already planning on using a 370dax and still looking for everything please help this newb to hifi with some advise! Thanks in advance!

I understand that you are new in this. Nobody can tell you if something sounds good enough for you. If someone is really sure something is good enough for you, be very skeptical. HiFi is not like computers where someone can objectively tells you that this processor is better than the other one. Let your ears lead you, not some random dude's random opinion. But ironically in youth dominated forums like this it is the newbies who have the most to say.

 

My advice is try to have a listen at the gears yourself if you can, even if you can't listen to everything out there, by referencing with those that you have heard, you *might* be able to guess how the others sound like.