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Shipped since July 2019, the unit has upgraded the transformers , can
power on long term.
Auto dark the display:
While the unit selected input 5 and the volume on 0 step, turn the
volume knob lower 1 step, the left
second display show "1" mean the auto dark active, the display will dark
after you stop operate all buttons .
If you want disable the
function, While the unit selected input 5 and the volume on 0 step, turn
the volume knob lower 1 step to let the
left second display show 0 .
Display inform:
Left first mean the
input channel number .
Left second mean
the auto dark function.
Another two
display mean the volume level, number higher volume is higher .
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.
In world there are more than 99% DACs and the sources had allow the
outputs short ,
Below case users
don't want the idle input short
circuit function, users can open the chassis, pull off the jumpers of
the proper input channels, please note must pull off of left and right
channels together :
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.
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Summarize