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afterimage

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    No more Procrastination! (An interesting small valve head story)

    in Amps and Cabs

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    On 31/10/2018 at 20:57, Twincam said:

    Replaced the v1 12ax7 in my pf20t, with a Tung sol 12ax7 reissue, after a few hours, seems to be an improvement in clarity and smoother breakup than the Chinese ruby it replaced. 

    My eq is now flat, before I had to slightly cut the bass and boast mids and treble. Gain is about the same, disappointingly! I think I might buy a golden lion or sovtek 12ax7lps for v1 as they have a bit more gain apparently and move the tung sol to v2. 

    Now I don't know if tube break in is real but I'm pretty sure after about 4 hours plus the tung sol improved a lot from first use. At first it seemed a bit wooly, it's now opened up. 

    It will do after a few hours use also use the stand by to warm up 

     

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