OTL Asylum

Posted by jb0194 (A) on September 30, 2006 at 08:17:27

I've decided to test a set of these in my M60s.

A single tube failed at power up (I had the same thing happen with the Sovtek 6AS7s when I first received my amps as second owner three years ago).

I bought two extra tubes with this possibility in mind and, with failed tube replaced, all is well.

I must say that, after about 25 listening hours, I actually like the sound a bit better than with Svetlana 6H13Cs that I'd been running. A tad more smoothness and instrument/voice localization. My expectation was for, at best, equivalence with the old Soviet tubes so this is a pleasant surprise. It may be that the Svets were well-used before I received them and I'm hearing the differences from a fresh set. No matter, the bottom line is that the Chinese tubes, at this point, are definitely keepers.

Just wanted to let folks know my initial impressions...

jb

• Re: Chinese 6N13P tubes - tubevibb 16:32:25 09/30/06 (3)
  In Reply to: Chinese 6N13P tubes posted by jb0194 on September 30, 2006 at 08:17:27:

  Were can I get some,how much.I have had more than one bad Svelana!I no there the same some what. I like Sovtek.Thank,s
  
  

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  • Re: Chinese 6N13P tubes - jb0194 08:53:07 10/02/06 (2)
    In Reply to: Re: Chinese 6N13P tubes posted by tubevibb on September 30, 2006 at 16:32:25:

    I purchased these tubes from Brian at:

    www.diyhifisupply.com

    His customer service is unsurpassed.

    BTW, the Chinese military 6N8P-A (6SN7) tubes he also sells are robust, reliable and very nice-sounding. Even an "NOS snob" like myself cannot deny their overall superiority in the constant current source (V3) and driver (V4) positions of the M-60 amps!

    jb
    
    

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    • Re: Chinese 6N13P tubes - pathologymd 10:32:30 10/02/06 (1)
      In Reply to: Re: Chinese 6N13P tubes posted by jb0194 on October 2, 2006 at 08:53:07:

      Which grade of tube did you buy? It appears he has two different tube grades, one for $6.00 and one for $12.00.
      
      

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      • Re: Chinese 6N13P tubes - jb0194 09:28:06 10/03/06 (0)
        In Reply to: Re: Chinese 6N13P tubes posted by pathologymd on October 2, 2006 at 10:32:30:

        They are the "T" grade, but Brian had very few and I was told none remain. I'm going to try a set of "J" grade.

        You may want to ask him about grade differences, as I use "J" grade 6N8P-A (6SN7) as driver tubes in my M60s and prefer them to Sylvania/RCA/Baldwin(Raytheon) GTA and GTB I have.

        jb
        
        

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