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                  Shindo Laboratory
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                  Japan manufacturer of tube amplifiers such as Petrus III and stereo pre amplifier Monbrison.
                   
                  
                  
                   
                  
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                | 3.  | 
                
                  
                  Coda Technologies
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                  FET line stages and phono preamplifiers and bias class A power and integrated amplifiers such as Unison integrated amplifier.
                   
                  
                  
                   
                  
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                | 5.  | 
                
                  
                  Tron Audio
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                  Manufacturer of high end tube amplifiers and preamplifiers. Also makes loudspeakers. Swiss.
                   
                  
                  
                   
                  
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