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Avoid connecting the e68 DAC to receivers or any other sound processing equipment that
perform analogue to digital (ADC) conversion. Digitizing the analogue output signals back
to the digital domain will undo some of the benefits that e68 brings to you. Remember
that your sound system is as good as the weakest link in the sound processing chain.
Connecting the Power Supply
To minimize ground noise and hum, it is recommended to connect the power cords of all components to
a single point - usually a single surge protector with multiple outlets. Connecting all components to a
single point, as close as it is practically possible minimizes the differences in ground potentials between
the components.
Using a Third-Party Power Supply
The e68 DAC comes with a 12V/1670mA power supply. It has been tested to comply with
the DAC’s quality requirements and allows for very high performance.
If you decide to use another power supply, the specifications marked on the back of the
e68 DAC must be observed.
Surge Protectors
We strongly recommend the use of surge protectors for all of your audio and video components.
Isolating the Cable TV Ground
If you have a cable TV connected to your audio system, ensure that the TV cable ground is galvanically
isolated from the audio system ground. The TV cable ground, usually connected to the earth outside
your home, can have a significantly different potential than the audio ground. This condition can cause
audible hum. If you suspect this is the case, use a cable TV ground isolator just before the cable set-top
box or at the RF TV input.
When turning on and off your sound system, the power amplifier should be the last
component to be turned on and the first component to be turned off. This prevents power
on/off transients from being transmitted to the loudspeakers.
