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• LPCM – Digital audio output via HDMI will be multi-channel Linear PCM format. When this option is selected, compressed audio
bit streams will be decoded by the player. This setting is recommended when connecting the HDMI output directly to a TV or to a
receiver without advanced audio decoding capabilities. This process bypasses the MSB processing.
• Bitstream – Digital audio output via HDMI will be in bitstream format. This option is recommended when connecting the HDMI
output to an A/V receiver or processor that supports advanced audio decoding, such as Dolby TrueHD and DTS-HD Master Audio.
• Off – No digital audio output via HDMI. This is recommended
.
NOTE If you use HDMI to connect audio to an HDMI A/V receiver or audio processor, it is important that you choose 720p or higher
HDMI output resolution when playing high resolution audio content (DVD-Audio, SACD, Dolby TrueHD and DTS-HD Master Audio).
According to the HDMI specification, the bandwidth available for audio is proportional to the total bandwidth used by video. At 480p/576p
resolution, the HDMI specification can only support 2 channels of audio with high sample rate (up to 192kHz), or 8 channels of audio
with standard sample rate (up to 48kHz). If you play high resolution audio content at the 480p/576p resolution, you may get reduced
audio resolution, incomplete audio channels, or even no audio/video output at all. Choosing a higher output resolution such as 720p or
above allows enough bandwidth for all high sample rate audio channels.
3. Coaxial/Optical Surround Output: To set the output format for the Surround coaxial/optical digital audio output for use with Dolby
Digital and DTS-compatible receivers. The options are:
• LPCM – Forces down-mixed 2-channel digital audio output. This option should NOT be selected. The UMT digital outputs
always output LPCM. This option is for the coaxial and optical surround output only.
• Bitstream – Passes audio as compressed bitstream format to the receiver/amplifier. Choose this setting if your receiver/amplifier
is capable of decoding Dolby Digital and/or DTS. This output will work but bypasses the MSB processing and should only be
used for movies.
4. LPCM Rate Limit: This menu item does NOT change the sample rate of the digital audio outputs.
NOTE: Output sample rate is set using the small toggle switch on the rear of the unit only when upsampling is enabled.
5. SACD Output: To select audio output format for SACD. The options are:
• PCM – DO NOT SELECT THIS OPTION.
• DSD – SACD DSD data is output over HDMI without any conversion. For the digital audio outputs, DSD data is processed by
the internal MSB processor to obtain the highest possible digital audio. The S/PDIF outputs 172.4 kHz 24 bit digital audio but
the MSB Network outputs the full resolution 32 bit output.
Note: Due to a hardware limitation, DSD output is only available from the HDMI 2 OUT port.
6. HDCD Decoding: To set the audio decoding option for HDCD (High Definition Compatible Digital) discs. The options are:
• On – HDCD is decoded with the idea of an expanded the dynamic range but with the resolution of the MSB DAC this is a step down
in the UMT.
• Off
– HDCD is treated as a regular CD. This is the only option for the highest quality audio output. Unfortunately HDCD decoders
are quite dated and when enabled, actually process and reduce the performance of all music played. Best to leave it OFF.
Blu-ray Audio Playback
Blu-ray Discs may contain many types of audio signal formats, some of which are high resolution types such as Dolby TrueHD and
DTS-HD Master Audio. Blu-ray Discs also have many optional audio components such as the Secondary Audio Program and menu
clicking sound. The UMT is specifically set up to be either a 2 channel or multichannel transport. Multichannel formats are processed
and downmixed to two channel.
Recommended Audio Format Options
Depending on your specific audio system, the audio format options of the UMT may need to be adjusted to match your configuration.
NOTE: In all cases the menu settings should be left the same, as received or as reset according to the RESET TO FACTORY STANDARD
section. Do not attempt to make any audio changes using the menu options.
NOTE: The default configuration of this UMT is STEREO. Do NOT attempt to adjust multi-channel features in this mode. When set
to the MULTICHANNEL mode, the UMT surround controls can be successfully used.