From: lvogliobene@gmail.com   
      
   Hi to all, I am new in this forum, I own a MingDa MC368BSE audio amplifier and   
   it is time to replace the final tubes, I was suggested to replace the original   
   4 Jinvina KT90 with a selected quartet of Electro Harmonix KT90EH; I wonder if   
   the BIAS will be    
   OK if not exactely the same (this amp has a fixed BIAS).   
   Thank you in advance for your kindly replies.   
   Luigi   
      
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