Boulder Amplifiers 1012 DAC Preamplifier - Manual (Page 20)

To select a digital input, press one of the DIGITAL pushbuttons
labeled ONE through FOUR. For a few seconds, the input sample rate
of the source and the Upandoversampling™ rate out of the DSP will be
shown. For example, a regular CD will show “INPUT RATE 44.1kHz,
OUTPUT RATE 705.6kHz.”
The “INPUT RATE” is the rate at which the 1012 receives data from
the source. The “OUTPUT RATE” is the rate at which the 1012’s Digital
Signal Processor (DSP) sends data to the converters. The ratio of these
two numbers is the amount of Upandoversampling™ performed by the
DSP.
Then the respective input will be shown in the display and that signal
will be routed to both the main and record outputs. For example, if input
ONE is chosen, “D1. DIGITAL INPUT 1” will show in the display.
OPERATION
2-3