when playing DSD signals, it will first convert DSD to PCM and output
PCM signals.
DoP mode: PCM will be output as PCM signals while DSD will be output
as raw DSD signals.
Notes:
Select DoP first. For some devices that are not supportive of DoP, please
select D2P.
Gain
There are 3 levels, High, Medium and Low, corresponding to 3 levels of
output voltages. You can select different Gains according to the
earphones used.
Lowpass filter mode
There are 7 different filters (internal configuration of the ES9038Q2M)
built in the JM21 for your preference.
Filters are the sound effects born with the chip, which only has slight
adjustments for the sound. Here are some introductions to different
filters. These are only for reference since actual listening also has
something to do with the matched device.
1) fast roll-off,linear phase filter: Most Common filter with clean
suppression and high rejection, best for music with high transients.
Provides crisp clean highs
2) slow roll-off,linear phase filter: coherent and clear sounds, positioned
near the middle. It is suitable for classical music.
3) fast roll-off, minimum phase filter: Minimal Pre- Ringing, preferred for
Imaging and soundstage. No aliasing in frequency domain. Stronger
bass than Linear Phase,clean highs
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