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IMPORTANT:
Tube (valve) replacement
The DAC must be powered OFF by the mains switch on the back panel (mains IEC socket) and
then fully disconnected from the mains socket for a minimum of 10 minutes before
commencing any tube replacement.
(`bleeding` the circuit fully discharges power supplies within 2 minutes, but take care as the
valves may be still too hot to handle).
Fuse
The unit is fitted with an Anti Surge 1A fuse, which is located in the IEC mains socket on the
back panel – this must be replaced only with the same amperage value! (a spare fuse is
provided in the fuse "drawer"). In case of subsequent fuse failure, the unit should to be sent to
an authorised VAD service agent for checking.
Earth connection
The unit must be earthed! This is provided by the safety earth contact in the IEC mains socket.
Make sure that the earth connection of your home mains electrical installation is in order.
Removing the protective Valve Cover.
The valve cover is secured to the top of the unit by way of 4 hex bolts being accessible through
slots in the valve cover. The cover may be removed in order to facilitate tube replacement by
using the supplied long hex key (2mm) tool to undo the bolts.
We do not recommend using DAC-10 / DAC-10 DSD without the protective cover – valves are
hot when operating.
DAC-10 / DAC-10 DSD valves operational `life span` information.
The DAC-10 / DAC-10 DSD has been designed to the highest parameters, with each component
rigorously tested. We have chosen to use NOS (New Old Stock) valves due to their audio
qualities and longevity. However, due to the nature of vacuum valves, we offer a 90 days from
purchase date warranty for the valves originally supplied for peace of mind.
`Burn-in` time.
Each DAC-10 / DAC-10 DSD is hand-built and then tested through for a minimum of 24 hours
`burn-in` test (all input sources, all output levels). This means that the DAC-10 / DAC-10 DSD
has a 24 hours burn-in period prior to delivery.
Once installed, we recommend a further 100 hours burn-in period for the DAC-10 / DAC-10
DSD to reach its full potential.
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