Audio Note DAC2.1x 2007 - Manual (Page 10)

OPERATION
Once all the connections are completed and checked, ensure that the volume control
on your preamplifier / integrated amplifier is at the minimum setting.
Ensure that the CD Transport connected to the DAC2.1x is switched ON.
Source components should always be the FIRST components to be switched on and
the LAST components to be switched off.
Ensure that all pre and power amplifiers connected to the DAC2.1x are
switched OFF.
The above procedure minimizes the possibility of loud noises produced by
components at switch on being passed to the loudspeakers and possibly causing
damage.
Turn on the DAC2.1x by using the rocker switch located on the rear panel, above the
mains inlet IEC socket. The red ‘power on’ indicator LED located on the front panel
should now be illuminated.
Turn on your pre amplifier / power amplifier / integrated amplifier. If you are using a
pre / power combination, always turn on the pre amplifier BEFORE the power
amplifier(s).
The DAC2.1x is now ready for operation!
Bedding in
The DAC2.1x requires around 100 hours of initial use (called
“bedding in”) before the circuitry becomes stable and optimum
performance is realized. As the device “beds in” the sound will
become increasingly more smooth, detailed and open. A warm
up time of approximately 30 minutes is required each time the
device is switched on before optimum sonic performance is
reached.
Cleaning
No special maintenance is required for the DAC2.1x. Use a
soft, clean lint free cloth to remove any surface marks from the
casework. For finger marks / grease, use a soft, clean lint free
cloth, lightly moistened with a solution of warm water and mild
detergent. Do not use any alcohol or solvent based cleaning
products, as they may damage the finish.
ENSURE THAT THE DEVICE IS SWITCHED OFF AND
DISCONNECTED
FROM THE MAINS ELECTRICITY
SUPPLY BEFORE UNDERTAKING ANY CLEANING.
Valve Life
The valves supplied with your DAC2.1x should provide
approximately 4 years of operation. They are specially selected
by us, and should only be replaced with valves of the same
type and specification. Please consult your Audio Note (UK)
dealer should your valves need replacing. Alternatively, feel
free to contact us directly.