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INPUT SELECT This switch selects the input source. With the switch out the
analog inputs are selected. XLR balanced and RCA unbalanced connectors
are provided on the rear panel. When the INPUT SELECT switch is depressed
the digital inputs are selected. AES3, S/PDIF and optical inputs are provided
on the rear panel. A toggle switch on the rear panel selects between the AES
and S/PDIF-optical inputs.
SAMPLE RATE INDICATORS The LED sample rate indicators display the
digital input signal sample rate. The sample rate is determined by a frequency
comparator, not by the sample rate bits in the digital data. This ensures that
the proper DAC filter settings are used even if there are erroneous sample rate
bits in the signal. Sample rates of 44.1, 48, 88.2 and 96kHz are directly
indicated. 32kHz is indicated when the 44.1 and 96 LEDs are both illuminated.
OUTPUT JACK The two output jacks are wired in parallel so that two sets of
headphones can be used simultaneously. They are wired left channel to the
tip, right channel to the ring and ground to the sleeve.
POWER SWITCH The power switch connects power from the AC input
module to the preamplifier circuitry. When depressed, the POWER SWITCH
will illuminate.
