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why u47 has no tube in it?
Author: liyuesong
Date: 06/21/2013
I found 3 old U47 mic (not u47 fet), the s/n is 2503,2903,2905, I open the mic body,but there is no tube in it, why?  
 
Reply
liyuesong
06/21/2013
Klaus Heyne
06/21/2013
Martin Schneider/Neumann
06/24/2013
jarkko Grekula
07/07/2013
liyuesong
07/07/2013
jarkko Grekula
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