The unit applied input short design :
         The unit  had design the analog idle input short circuit for avoid the disturb between different sources.
         This design also applied in a lot high end brand devices.
         The working theory :  Without the idle input short circuit ,if the input 5 and input 4 had connect two extra DACs,  while users select the either input 5 and input 4 , the another input signal will fire through the circuits and mix  into the using signal, even though this signal is  weak  but still can degrade on the sound quality.
          With the idle input short circuit function : if user select either the input 5 and input 4, the another input signal will short circuit then no any signal fire through circuits , can keep the sound quality had not degrade.
         Below case users don't want the idle input short circuit function, please make the custom order :
        1, The same extra source not only connect the unit analog input, but connect with other amps simultaneity.
        2, The same extra source connect to the unit different inputs  at simultaneity.
　

Master-10 volume control characteristic:
    The Master 10 had large power output, for better match with the high and low sensitivity speakers,we had applied the super exponential volume control .
    Supper Exponential volume characteristic                   The Volume steps comparison to normal volume knob