Digital Inputs
The DAC-4 has a selection of inputs and is compatible with the majority of digital source
components currently available. The standard specification for all Coax and optical inputs is
16-24 bit word length and 32-96ks/s sample rates. The USB input has been designed to offer
plug and play set up with most computer operating systems. It is ideal for listening to internet
streaming services that provide lossless quality at 16 bit 44.1ks/s. To obtain the best sound
quality from a computer we recommend introducing a dedicated high quality USB to SPDIF
converter. The use of such a device will provide future software upgrades and superior
compatibility with dedicated music software for stored music files.
The DAC-4 has the ability to accept 24bit/192k word length. This however is not available
without resetting the input transceiver and therefore unavailable when using a playlist of
mixed resolution audio files. To reset the transceiver the DAC-4 must be disconnected from
the mains supply and reconnected with the data source set to 24bit/192k output. Your
computer of streamer may require rebooting before the DAC-4 will lock. If the transceiver
does not lock to the correct frequency a breakup of sound may be experienced.
Replacing Fuses
There are two internal power supply fuses and one mains fuse in the DAC-4; these are to
protect the unit in case of a failure. If a fuse does require replacing, this is usually an
indication that a fault exists. However, it is not always an indication that the DAC-4 is at fault
so it is important to determine the cause before replacing any fuses. Please consult your
dealer for advice. The mains input fuse is located in a draw withing the IEC mains input
socket. A spre fuse is also supplied in the draw.
•
Always replace fuses with the same type and rating
Looking After Your Masterclass
The case construction of your Masterclass is made from durable traditional materials carefully
chosen for their none intrusive electrical properties. The front plate is solid machined
aluminium plate that has been carefully anodised to a high finish. The legend is ink based and
as with the rear panel, this should not be cleaned with any type of solvent. The rest of the
case is powder coated and should only be cleaned with a soft slightly damp cloth.
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Designed & Manufactured By
J. E. Sugden & Company Limited
Valley Works Station Lane Heckmondwike
West Yorkshire WF16 0NF
ENGLAND
www.sugdenaudio.com
The manufacturer reserves the right to alter specification without notice