Tubes Asylum

• Re: Mitsubishi 12AU7 *nothing special* - Kim S. 03:39:37 02/08/07 (4)
  In Reply to: Re: Mitsubishi 12AU7 *nothing special* posted by grinagog on February 8, 2007 at 02:33:26:

  Thanks for the info. My preamp has RCA cleartops that are labled Conn so are cheaper than those badged RCA. They are very good. I immediately noticed the improvement when I replaced the stock JJ 12Au7s. I'll probably replace the Mitsubishi's later.
  
  

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  • Re: I'll 2nd the posting that suggests the Cleartops are overrated - grinagog 17:02:01 02/08/07 (3)
    In Reply to: Re: Mitsubishi 12AU7 *nothing special* posted by Kim S. on February 8, 2007 at 03:39:37:

    Black plate USA tubes; GE's are common, but very good in terms of long service life and neutrality

    
    Grins
    
    

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    • Re: I'll 2nd the posting that suggests the Cleartops are overrated - Kim S. 03:51:28 02/09/07 (2)
      In Reply to: Re: I'll 2nd the posting that suggests the Cleartops are overrated posted by grinagog on February 8, 2007 at 17:02:01:

      I'm new to tube rolling so I really have no idea how a particular tube would compare to the majority of the others. I do know the Conn(RCA) tubes sound alot better than the JJ's they replaced. When it comes time to replace the 12AU7's in my power amps I was thinking of some of the European variants,Amperex,Telefunken,ect.
      
      

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      • Re: Amperex, Telefunken you'll pay good money for - grinagog 16:10:31 02/09/07 (1)
        In Reply to: Re: I'll 2nd the posting that suggests the Cleartops are overrated posted by Kim S. on February 9, 2007 at 03:51:28:

        and success in tube rolling is to keep an open mind and listen to whether the changes you make are an improvement, or a sideways move
        GE, Raytheon, JAN ( Military ), 5814/5814A, 5963, 6189's Tung Sol, Sylvania

        I've owned and used Mullards, Telefunkens and Amperex BB's of varying vintages and while these are great tubes; the USA tubes are better buying

        Grins
        
        

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        • Re: Amperex, Telefunken you'll pay good money for - Kim S. 03:04:18 02/10/07 (0)
          In Reply to: Re: Amperex, Telefunken you'll pay good money for posted by grinagog on February 9, 2007 at 16:10:31:

          Thanks again for the feedback. I take it that the above list GE,Raytheon,etc are worth trying. I'm not interested in name dropping, the tube that sounds best is the goal. Got some other minor tweaks to do before I start tube rolling. Change only one variable at a time!
          
          

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