Audiolab M-DAC 사용자 지침 - 페이지 8

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Audiolab M-DAC 사용자 지침
6: Operation-2
TM
Playing Music via Apple
Docking
Connect an Apple
TM
device as shown in the following list via a specified AppleTM USB cable
to the iPhone/iPad input on M-DAC+'s rear panel. Rotate the SEL knob to turn source to
USB A. Click Play in the music player software on the AppleTM unit to start playing. Only use
M-DAC+ to control the volume level - the volume control function on the AppleTM device will
be disabled.
M-DAC+ AppleTM docking is compatible with following AppleTM models:
•Made for iPhone 6
•Made for iPhone 6 Plus
•Made for iPhone 5S
.Made for iPhone 5C
•Made for iPhone 5
•Made for iPad Air (2nd generation)
•Made for iPad Air
•Made for iPad Mini (3rd generation)
•Made for iPad Mini (2nd generation)
•Note: Models not listed here may be supported by M-DAC+ despite not having undergone
compatibility testing. iPhone and iPad models will charge their battery continuously when
docked if M-DAC+ is connected to mains power.
"Made for iPhone" and "Made for iPad" mean that an electronic accessory has been designed
to connect specifically to iPhone and iPad respectively, and has been certified by the developer
to meet AppleTM performance standards. AppleTM is not responsible for the operation of this
device or its compliance with safety and regulatory standards. Please note that the use of this
accessory with iPhone and iPad may or may not affect wireless performance.
Selecting a Digital Filter
M-DAC+ has 7 filters available for PCM audio. Press the remote control MENU key to enter
menu mode, press
to access the "Digital Filter" menu page, press
or
filter page, press
again to select a different filters, press
or
chosen filter. Pressing the MODE knob on the front panel can also enter the menu mode,
rotating this knob turns the menu page to "Digital Filter ", press the MODE knob again to
enter this page and then rotate the knob to change filters, press the MODE knob again to
select a filter.
The "Optimal Transient" filters exhibit no ringing – the transient nature of the music is
preserved. Although exhibiting poorer performance in technical measurements, sound from
this type of filter has a purity and "naturalness" that more than compensates for the lack of
the technical specifications. There are three Optimal Transient Filters. They exhibit identical
frequency and time domain response but the internal structure of the filters varies resulting in
small but the perceptibly different sonic nuances.
The "Sharp Rolloff" filter typifies industrial standard characteristics (-6dB at 1/2 Fs with
significant time-domain ringing ) and is included here for comparison purposes.
The "Slow Rolloff" filter starts rolling off at a lower frequency than the Sharp Rolloff filter but has
a gentle rate of attenuation and significantly less "time-domain ringing". It is not recommended
to use this in normal operation, unless the digital signal from a source is very poor and cannot
play with other filters.
The "Minimum Phase" filter has a gentle attenuation slope similar to the Slow Rolloff option,
however it exhibits no pre-ringing in the time domain. It can be likened to an analogue filter
applied in the digital domain.
The "Optimal Spectrum" filter implements optimum sampling theory and is designed for near
perfect technical response in the frequency domain. This filter also has time-domain pre-
ringing which may be associated with listener fatigue. It is, however, a 'smoother' alternative to
the Optimal Transient filter.
For DSD mode, there are four filters "Normal", "50K", "60K" and "70K" with cutoffs at
47k, 50K, 60k, 70k. The user can adjust the IIR bandwidth by selecting different filters to get
particular sonic nuances.
The M-DAC+ uniquely offers you a wide choice of filters to suit your listening preferences.
Page 7
to enter the
again to confirm the