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Need advice on Unico 12AU7 tube rolling

Dear all,

I am using a Unico CD Player which uses 2 X 12AU7 (ECC82/5814) tubes. Somehow the stock tubes seem to be quite dull and lifeless. I wanted to try changing the tubes. I prefer to have more detailed sound with more clarity. Can anyone please advise on :

- What type of tubes can I try to get more lively and detailed sound ?

- Also, how can I change the tubes in Unico CD player (any procedure to follow ?). I am totally new to tubes.

- Can I get some links to where I can find some beginner info/guidance on tube rolling ?

I will highly appreciate any experiences with tube rolling with any Unico Amp/Pre or CD since most of the Unico products are using the same ECC82 tubes.

Kindly advise.

Thanks in advance.
wilfredt

Showing 2 responses by wilfredt

wilfredt OP
36 posts
 
Thank you very much. I checked the website of Triode Electronics and their prices seem to be very reasonable.

Also what is the difference between NOS and New tubes ? Apparently NOS seem to be more expensive - hence the quality is much better with NOS tubes ?

In NOS which brands/makes are normally popular ? I hear lot of names Philips, Siemens, Mullard, Sylvania, RCA, etc from Britain, USA, Russia, etc.
wilfredt OP
36 posts
 
Thanks a lot for all your nice inputs. This motivates me to do some tube rolling. Will try Radiotechnique, RFT, Amperex Bugle Boys, Brimar or Telefunken after doing some more reading. Good to know that the player responds to tube changes.

Also are there any recommendations for more authentic and popular tube sources which are reliable ?

Thanks in advance
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