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Aune T1 USB Tube DAC+Amp Discussion Thread ***See first post for FAQ*** - Page 266

post #3976 of 5630

Aune T1 amp portion is quite bright and "cold" sounding to many and it`s little "weak" for some high-impedance headphones or orthos. To bring out best potential of some cans they need more powerful amp and if it uses more tubes - more options to find synergy.

post #3977 of 5630

Gonna try a 6N3P/5670W/301A tube combo for the hell of it now....

post #3978 of 5630
Quote:
Originally Posted by CoiL View Post
 

Aune T1 amp portion is quite bright and "cold" sounding to many and it`s little "weak" for some high-impedance headphones or orthos. To bring out best potential of some cans they need more powerful amp and if it uses more tubes - more options to find synergy.


Thanks...I have never even used the headphone amp on the T1 ...straight out the RCA's to the system...

post #3979 of 5630
Quote:
Originally Posted by arcorob View Post
 


I have one and like it very much...The 12AU7 tube rolling really opens it up...

 

What's wrong with the amp in the T1 ? Why not use that ?

someone mention improvement when pairing with tube amp ,standalone Aune  sounds sweet but if I can improve it  with tube amp without sacrificing the overall tube signature I will probably do it 

post #3980 of 5630

Took the Aune apart. The heater circuit is stand alone, and can handle 3 amps. 

 

 

 

And here is the headphone amplifier board. I see lots of room for improvement here.


Edited by lwrs10 - 1/8/14 at 2:23pm
post #3981 of 5630
useless info
Edited by lwrs10 - 1/8/14 at 2:17pm
post #3982 of 5630
Replaced the no name secondary regulated power supply caps with some good Nichicon.



3y7y3ery.jpg

Sent from my HTC One X+ using Tapatalk
post #3983 of 5630
Quote:
Originally Posted by lwrs10 View Post

Replaced the no name secondary regulated power supply caps with some good Nichicon.



3y7y3ery.jpg

Sent from my HTC One X+ using Tapatalk


Did the PS caps really matter ? which ones are in the signal path ?

post #3984 of 5630

Those gold caps are directly in the signal path for the headphone amplifier.

 

The power supply caps usually do not matter, but no brand caps don't sit well with me.

 

 

As for sound difference, using headphones, this tamed down the slight harshness it always had before. It never had that problem using the line out, but the headphone amp was kinda harsh to my ears. The line out listening will be done tomorrow, as it is late tonight.

 

 

But as far as the headphone out difference, well......it was quite a noticeable improvement. 


Edited by lwrs10 - 1/8/14 at 2:18pm
post #3985 of 5630
Quote:
Originally Posted by arcorob View Post


I have one and like it very much...The 12AU7 tube rolling really opens it up...

What's wrong with the amp in the T1 ? Why not use that ?

I'm sure CoiL and others are correct about fairly high impedence phones. For my easy to drive HD558s the Aune T1 amp works just fine. With the correct tube it can sound great on its own.
post #3986 of 5630
Quote:
Originally Posted by teb1013 View Post


I'm sure CoiL and others are correct about fairly high impedence phones. For my easy to drive HD558s the Aune T1 amp works just fine. With the correct tube it can sound great on its own.

 

 

I'm working on that right now. Measuring voltages, mapping out the circuit, and seeing how I can improve it. 

 

 

I also got the balls to try out a 6H30P finally. 850ma heater current! But like I said, the Aune's heater supply can handle up to 3 amps, so no worries on my end. This is a tube to add to the list. It works perfect, with quite a good sound so far. This makes the list expand quite a bit.....6H6N, etc. See the Little Dot Mk III thread.

 


Edited by lwrs10 - 1/7/14 at 9:26pm
post #3987 of 5630
Quote:
Originally Posted by lwrs10 View Post
 

 

 

I'm working on that right now. Measuring voltages, mapping out the circuit, and seeing how I can improve it. 

 

 

I also got the balls to try out a 6H30P finally. This is a tube to add to the list. It works perfect, with quite a good sound so far. This makes the list expand quite a bit.....6H6N, etc.

So we can just insert the 6h30p into the socket and it will work? This past few days is getting crazy because the tubelist kept expanding ! :D Will appreciate it if you can rate the tubes in the near future ^^ and thanks in advance 

post #3988 of 5630
Quote:
Originally Posted by isendono View Post
 

So we can just insert the 6h30p into the socket and it will work? This past few days is getting crazy because the tubelist kept expanding ! :D Will appreciate it if you can rate the tubes in the near future ^^ and thanks in advance 

 

 

Thats all I did.....plug it in and turn it on. No adapter needed. 

 

 

And I do have a tube review post already, and am adding to it as I see fit.

 

http://www.head-fi.org/t/633006/aune-t1-usb-tube-dac-amp-discussion-thread-see-first-post-for-faq/3885#post_10132763

 

 

 

Initial impressions of this 6H30Pi is it has some BALLS. Very punchy.

 

*EDIT EDIT EDIT*

 

Between changing out those caps and throwing this 6H30Pi in, I have found my musical Zen. That is all.


Edited by lwrs10 - 1/8/14 at 2:18pm
post #3989 of 5630

This is just ................................ C R A Z Y! O_o !

About fake caps - got to check my unit too but I belive my unit has real caps in place because I bought it long time ago when Aune T1 didn`t have this reputation and price was noticeably higher.

But going to open my unit soon anyway - making wooden case+knob with tube "box" under it for 3-4 tubes ;P

post #3990 of 5630
Quote:
Originally Posted by CoiL View Post
 

This is just ................................ C R A Z Y! O_o !

About fake caps - got to check my unit too but I belive my unit has real caps in place because I bought it long time ago when Aune T1 didn`t have this reputation and price was noticeably higher.

But going to open my unit soon anyway - making wooden case+knob with tube "box" under it for 3-4 tubes ;P

 

 

Update your list to include the 6H30P1, 6H6N, etc. They work very well.

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