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Some
advices for the unit have the life longer than 100,000 hours
:
1, The HE-9 had built in full analog
regenerative power supply, full class A power supplies and signal amps,
these designs will produce 25 centigrade higher than the room
temperature , we are advice shut down the unit for more than 2 hours
after continuously working 10 hours . The unit only need around 15
minutes for warm up.
2, Keep its top cover , side faces had least 3 CM space
and far to other heat gears for better heat follow
away .
3, Let it working in the room temperature lower than 30 centigrade . For
better sound reproduce, we had applied the R core transformer but the
power Consumption is large, so if the power supply over 235V or 125V may
cause the transformers had hum.
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 , if your DAC decalre can't short the output , please
custom order the Master 9 . |
Summarize