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Butler Audio TDB 3150 User Manual

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A U D I O, I N C 
WWW.BUTLERAUDIO.COM 
 
 
OWNER'S INFORMATION FOR 
 MODELS 5150 & 3150 
 
MODULAR DIRECT-COUPLED 
 VACUUM TUBE DRIVEN  
MULTI CHANNEL POWER   AMPLIFIER 
 
 
  
 
UTILIZING 
 
 
 
                                                           
T H E R M I O N I C
b
 
VACUUM TUBE TECHNOLOGY 
 
 
 
Concept & Design:  
B K Butler
 
 
Patented in the USA 
Worldwide patents pending 
 
 
 
 
 
 
 
  
"Tube Driver", "Tube Driver Blue", "Thermionic" and Blue Tube illumination appearance / method are 
trademarks of or patented by  
BK Butler