Wondering if anyone can suggest an inexpensive source for chimneys for
the 3-400/4-400 type tubes?  Especially cheap imports. :- )
Or if anyone in the US has a pair they want to blow out...
Or if anyone has a DIY solution...
        _-_-bear
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  _-_-bearlabs
   http://www.bearlabsUSA.com
    - Silver Lightning Interconnects & Custom Mods -