Other ＤＣ amplifiers　　

　　　4 or 5 years ago we could get several FET devices at Akihabara, but now
we could get very limited ones. At that time I manifactured many amps, for I
wanted to know their tone character.




Toshiba K1529

　
　Bright and dynamic tone. This is good for listening to Dave Grusin sound.


Toshiba K405

　　Changing bias part of K1529 amp, I listened to the tone of K405.

　　This was of cloudy tone. More tuning up was thought to be necessary.




Sony K722

　　Sharp tone. This FET was fragile, for it had no protective diode .



Motrola MJ2955

　　　Driver stage is MOS FET loosely heat-coupled to final stage. This amp
is　of good use enough.
　　

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