Owner's Manual

OPERATION
9
CHAPTER 3 OPERATION
ANALOG/DIGITAL SOURCE SELECTION
Choose between analog or digital input sources by means of the front
panel switch. Push the switch to the down position to select an analog
source, move it to the up position to select a digital source. The orange
input indicator lamp will confirm your choice.
You can freely switch between the two modes while music is playing.
Which source you will hear will depend on further configuration
options as described below.
ANALOG INPUT SELECTION
Choose between the 3.5 mm stereo analog input (LOW) and the RCA
Left/Right stereo analog inputs (HI) by means of the rear panel switch.
Push the switch to the down position to select the 3.5 mm analog
source, move it to the up position to select the RCA analog source.
The gain of each input is optimized for different source devices. The
3.5 mm (LOW) input should be driven by source devices with up to
850 mV (rms) maximum output. The RCA (HI) inputs should be driven
by source devices with up to 2.1 V (rms) maximum output. Higher
maximum output source devices can be used for these inputs, but
levels will need to be reduced to avoid over-driving the analog inputs.
DIGITAL INPUT SELECTION
The M1 amplifier/DAC unit has been configured to monitor the presence of a valid S/PDIF signal. When detected, the
unit switches the digital input to S/PDIF mode. The USB connection is then effectively disconnected, and you will not be
able to hear music via this connection while the S/PDIF signal is present. If you use both USB and S/PDIF connections,
you can control the digital input selection via the following methods:
1. Turn the S/PDIF digital output OFF on your disc player or computer.
2. Turn the power OFF on the S/PDIF source.
VOLUME CONTROL
Use the front panel level control to increase/decrease volume. Turn
the control clockwise to increase level, and counter-clockwise to
decrease it. As a precaution, we recommend always powering ON/OFF
with the volume control at its minimum position!