The ECC803S is fully compatible with the ECC83.
 
 The peculiarity of the ECC803S is the extra long anode, which is especially appreciated by audio users.
 
 As a BALANCED / SYMMETRY tested design, this tube is ideal as a driver tube, since the large anode surfaces are particularly advantageous at peak load in this area.
 
 After some initial difficulties, JJ now only produces this ""gray plate"" version after this ""long-plate"" version.
 
 The gray anodes are carbon coated, which enables long-term uniform emission.
 
  For this reason, the uncoated ""silver"" anode is no longer used.
 
  
  
   
    
     
Tubes type:      
     
12AX7 / ECC83 / 7025      
    
    
     
Base:
     
Noval (9 Pin)