Musical Fidelity M1 SDAC, Instructions For Use Manual

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ADDITIONAL SETTINGS – WINDOWS® ADDITIONAL SETTINGS – WINDOWS®
Issue 4 Page 38 of 47
When choosing this setting there is a compromise to be made: the minimum latency setting will delay samples
the least amount of time but there is more chance of pops or clicks if the host PC is not fast enough; the safest
setting makes the probability of audio drop-out least likely, but at the expense of having the greatest audio
latency.
The ASIO Buffer Size
This provides similar functionality when using the USB driver through its ASIO interface. A smaller buffer size
means the operating system must stream data to the driver more frequently and in a more timely fashion; this
achieves the shortest audio latency. A larger buffer size means that demands on the operating system are less,
but at the expense of increased latency.
Firmware Upgrade
This provides a facility to upgrade the firmware within the MF USB 2.0 Audio Out. One browses to a firmware
file of type .bin and clicks “Start Firmware Upgrade”. The MF USB Audio new firmware is sent to the MF USB
2.0 Audio Out and if the operation is successful then the MF USB Audio reboots, with the new firmware. A
firmware upgrade does not erase the original factory firmware image. If an upgrade fails then the factory
firmware continues to run as before; if an upgrade succeeds the new firmware is run in preference to the factory
image but it is usually possible to revert back to the factory firmware if desired(one needs to use dfucons.exe for
this). Firmware .bin image files must be appropriately formatted. Arbitrary files which a user may attempt to use
as upgrade images will fail to corrupt the device.
Device Info
This shows the product name and the manufacturer. It also shows the revision (Revision ID) of the currently
installed MF USB 2.0 Audio Out firmware. The Musical Fidelity unique vendor ID and the MF USB Audio
product's ID are shown.
Current Sample Rate
This is the sample rate that the MF USB Audio is currently playing.
Neither the USB driver nor the MF USB 2.0 Audio out do any sample-rate conversion. Audio will always
be played in its native sample rate, as stored on the computer.