Using the DAC2.1x Signature
Once all the connections are complete, turn on the digital source. Next turn on the
DAC2.1x Signature by using the rocker switch located on the back panel above mains
inlet socket. The red led on the front panel confirms that the unit is on.
The DAC2.1x Signature will improve over time and will start to sound increasingly
well balanced. This is because of the “bedding in” time taken by new electrical
components inside the unit. Also, the DAC’s sound quality improves as the unit
reaches its normal, stable operating temperature. Only a rear panel on/off switch is
provided as the unit is designed for continuous operation. The DAC2.1x Signature
need not be switched off each time after use. It is interesting to note that continuous
operation not only results in optimum sonic performance (since the unit is maintaining
a constant operating temperature) but also causes less electrical stress and so extends
component and valve life.
All our DACs have been designed to run into impedances of 100kOhms or greater.
Many preamplifiers both active and passive have low input impedances. We do not
recommend less than 50kOhms as this causes problems with bass roll off. If you are
in any doubt consult your dealer. Audio Note offer a modification to customers who
own pre-amplifiers with a low input impedance, which is fully refundable if at any
time an Audio Note pre-amplifier is purchased as a replacement.
Cleaning
Cleaning the DAC2.1x Signature is best done with a soft brush - some photographic
stores are able to provide suitable brushes. Alternatively, a soft cotton cloth may be
used with a mild propriety cleaner for removing dirt build-up. Strong or alcohol based
solvents may damage the finish of this product. Ensure the DAC2.1x Signature is
switched off and cold when cleaning. Do not wet the unit.
Upgrading the DAC2.1x Signature
One of the main problems with Digital Audio is the limited lifecycle of all but a few
products. This is why we make every DAC below the DAC3.1x Signature
upgradeable to that level. In this way your basic investment is not devalued but
remains secure for many years to come. If you wish to upgrade your DAC2.1x
Signature, contact your dealer and they will advise you on the best way to go about it.