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Aune T1 USB Tube DAC+ SS Amp Discussion Thread ***See first post for FAQ--Updated on 02/14/15*** - Page 278

post #4156 of 8013

What ECC85 is it? Same Mullard ECC85 that lwrs10 recommended?

post #4157 of 8013
Quote:
Originally Posted by CoiL View Post

What ECC85 is it? Same Mullard ECC85 that lwrs10 recommended?

I would need a better pic of the tube, but doesnt look like it.
post #4158 of 8013
Quote:
Originally Posted by lwrs10 View Post

I would need a better pic of the tube, but doesnt look like it.

Hello

It is a Telefunken brand
post #4159 of 8013

Can you see any etched code on glass?

post #4160 of 8013
Quote:
Originally Posted by CoiL View Post
 

Can you see any etched code on glass?

 

Hello

 

I only can read this

 

post #4161 of 8013

NB! Everybody who are using higher voltage/current tubes - make sure you clean your NOS tube pins properly!!! I tried this other PCC85 I got (different build from earlier mentioned PCC85) and without cleaning pins it sounded crackly and distorted. After cleaning - works like a charm!


Edited by CoiL - 1/11/14 at 4:54pm
post #4162 of 8013
Quote:
Originally Posted by CoiL View Post
 

NB! Everybody who are using higher voltage/current tubes - make sure you clean your NOS tube pins properly!!! I tried this other PCC85 I got (different build from earlier mentioned PCC85) and without cleaning pins it sounded crackly and distorted. After cleaning - works like a charm!


Thank you for the suggestion. 

 

What technic did you use it to clean tube pins?

 

Thanks in advance.  :L3000:

post #4163 of 8013

Yea my telefunken ECC85 i got off ebay has way too much distortion :(

post #4164 of 8013

 

I found this one.

post #4165 of 8013

...


Edited by CoiL - 1/12/14 at 10:03am
post #4166 of 8013
all that is wayyyyyyyyy too much work.



Pencil eraser. Poke a hole in the middle of it, spin it around each pin a few times, done.



Quote:
Originally Posted by manishex View Post

Yea my telefunken ECC85 i got off ebay has way too much distortion frown.gif


let it play for about an hour, and it will come around.
Edited by lwrs10 - 1/11/14 at 7:00pm
post #4167 of 8013
Quote:
Originally Posted by CoiL View Post
 

strong 30% spirit vinegar + baking soda ;)

Here is a little guide I made. It might not give you so good result as mini-polishing machines etc. but it`s with little hassle and all you need for it is probably in your kitchen/bathroom.

Also, it doesn`t take so much of your busy time, just leave it for ~30min and then wash excess "coating" off and clean with alcohol. Even better result if you burn tube for ~10min after cleaning and repeat process once more.
 

How to clean audio tube pins with easy-to-find home chemicals without micro-scratching and -shaping pins.

 

1st. Materials & tools needed:

 

  1. Larger than usual ~1-1.5mm needle, hard wire or something with sharp tip.
  2. Piece of thicker type paper, carton or plastic. Easy to get from used juice cartons or candy boxes. Re-use your junk! ;)
  3. Baking soda ( Sodium Bicarbonate - NaHCO3 ).
  4. Spirit Vinegar or other strong type (20-30%) acetic acid.
  5. Under-plate or some other „container“. One small and littlebit larger under-plate.

Both should be low in height. I use a cap from glass soup/jam can.

  1. Ventilated room because smell is strong & awful (open window and little airflow is enough).
  2. Some paper or cotton-stick + alcohol to wipe off acid left on pins.

 

2nd. Cleaning process with some pics:

 

  1. Cutting piece of paper/carton and making pin holes.

 

 

2. Mixing soda and acid.

 

 

3. Cleaning with running water, alcohol soaked cotton-sticks and drying pins.

 

 

Your done! Nice clean pins with less hassle and minimum damage to pins & leaving prints untouched! No special tools involved ;)

 

 

Thank you so much!!!  I did it with my nail machine.

 

 

And I finished it with the vinegar. 

post #4168 of 8013
Quote:
Originally Posted by CoiL View Post
 

NB! Everybody who are using higher voltage/current tubes - make sure you clean your NOS tube pins properly!!! I tried this other PCC85 I got (different build from earlier mentioned PCC85) and without cleaning pins it sounded crackly and distorted. After cleaning - works like a charm!


 Oh boy ... oh boy ... you were 100% right  ... the sound JUMPED UP after cleaning the pins  !!!!!!   A big smile in my face !!!!  :dt880smile: 

 

Thank you :beyersmile: 


Edited by HeavenNotes - 1/11/14 at 7:13pm
post #4169 of 8013

Do NOT use hard-polishing tips! It will thinner those pins and micro-shape! If using polishing machine - use felt or rubber tips!

post #4170 of 8013
Quote:
Originally Posted by lwrs10 View Post

all that is wayyyyyyyyy too much work.

Imho no. It`s easy. And rubber pencil wont remove corrodation/oxidation in way acid+soda does ;)

Maybe it just seems so much work because I made this guide too much step-by-step. If you have no special tools for polishing - it`s best way by my practice.

 

Btw, this method can be used to clean multiple tubes at once! ;)

 

Quote:
Originally Posted by HeavenNotes View Post
 
Quote:
Originally Posted by CoiL View Post
 

NB! Everybody who are using higher voltage/current tubes - make sure you clean your NOS tube pins properly!!! I tried this other PCC85 I got (different build from earlier mentioned PCC85) and without cleaning pins it sounded crackly and distorted. After cleaning - works like a charm!


 Oh boy ... oh boy ... you were 100% right  ... the sound JUMPED UP after clean the pins  !!!!!!   A big smile in my face !!!!  :dt880smile: 

 

Thank you :beyersmile:


Enjoy! :)


Edited by CoiL - 1/11/14 at 7:19pm
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