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FIRST VERSION OTL CLASS A TUBE AMPLIFIERS

post #1 of 8
12/23/10 at 9:38am
Thread Starter 

my first diy of the ciuffoli otl class a tube amplifiers make a HD 800 owner

very happy.

HEADPHONE AMP CLASS A.JPGdettail classA.JPG

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post #2 of 8
12/23/10 at 9:48am

Never heard of this before.

 

Are you speaking of this amp?

http://gilmore2.chem.northwestern.edu/projects/showfile.php?file=ciuff_prj.htm

 

Tell us more about it.

 

 

It looks pretty simple to build... or perhaps you just make it look simple =p

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post #3 of 8
12/23/10 at 9:50am

Is this the same amp as the other one you posted?  It looks a bit different, but my memory is failing me right now.

 

It looks to be a clean build.  I like your ground bus.  I use busses too.

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post #4 of 8
12/23/10 at 9:57am
Thread Starter 

the audiophile email me:

 

j'ai commencé a gouter au paradis audiophile ce soir, 4 a5 heures d'écoute la bete commence à se laisser apprivoiser, tres impressionnant sur des enregistrements de qualité , on se laisse transporter c'est superbe ,ca descend vraiment tres bas dans les graves ,par contre aucun cadeau sur des masters qui commencent à dater , les defauts sen ressentent de suite ,vive les remaster ,ceux des beatles sont incroyables!!!!!Le couple ampli/casque fonctionne à merveille ils sont faits l'un pour l'autre!

 

 

petit topo sur le hd800 il s'améliore au fil des écoutes, les basses sont plus rondes ,les aigus s'harmonisent un vrai régal avec votre ampli!!!!!!!!!


Edited by claudiomas - 12/23/10 at 10:07am
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post #5 of 8
12/23/10 at 10:06am
Thread Starter 

yes ,

but tubes, resistors type and value are differents. from original project.

the first one i present today was whit noval tubes,

russians military

6NP23 X2

6N6P X2

both paralleleds.

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post #6 of 8
12/23/10 at 10:16am
Thread Starter 
Quote:
Originally Posted by holland View Post

Is this the same amp as the other one you posted?  It looks a bit different, but my memory is failing me right now.

 

It looks to be a clean build.  I like your ground bus.  I use busses too.


yes but whit noval tubes.

no hum , no thd,

clear and powerfull sound,

but need a good class A polarization and perfect power supply.

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post #7 of 8
12/23/10 at 10:20am
Thread Starter 
Quote:
Originally Posted by nullstring View Post

Never heard of this before.

 

Are you speaking of this amp?

http://gilmore2.chem.northwestern.edu/projects/showfile.php?file=ciuff_prj.htm

 

Tell us more about it.

 

 

It looks pretty simple to build... or perhaps you just make it look simple =p

yes,

this is the original amp .

i just inspired from ,

i love it ,  no feedback,

pure class A,

basic circuit,

but need a perfect bias and perfect ground to be 1rst class.
 

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post #8 of 8
12/23/10 at 10:29am
Thread Starter 

C3804.JPG

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