Classe Audio Delta PRE Owner's Manual page 11

75Ω impedance rating. Your Classé dealer can help you with proper cable
selections.
4 Digital Audio Inputs - Optical
The Delta PRE supports three digital audio inputs, with optical TOSlink
connectors labeled OPT1 to OPT3. These inputs accept PCM data
streams up to 32-bits long and up to 192 kHz sampling frequency*. We
recommend using cables that are optimized for digital audio signal transfer.
Your Classé dealer can help you with proper cable selections.
*NOTE: The bandwidth limits of TOSlink™ components are very
much strained at a 192 kHz sampling frequency. For that reason
you may want to limit signals using the TOSlink™ connections to a
maximum rate of 96 kHz.
5 Analog Audio Inputs - Single-Ended
The Delta PRE supports 2pr of RCA type connectors for single-ended line-
level analog sources. They are labeled R3/L3 and R4/L4.
6 Analog Audio Inputs - Balanced
The Delta PRE supports 2pr of XLR type connectors for balanced analog
sources. They are labeled R1/L1 and R2/L2.
NOTE: This input conforms to the AES (Audio Engineering
Society) "pin 2 = hot" convention. The pin assignments of these
XLR-type female output connectors are:
Pin 1: Signal ground
Pin 2: Signal + (non-inverting)
Pin 3: Signal – (inverting)
Connector ground lug: chassis ground
Verify that the source components are compliant with this
convention (Classé components are compliant). If not compliant,
contact your Classé dealer for assistance.
The XLR R2/L2 connectors may be assigned as a phono input. See the
section on Phono Setup.
NOTE: The Balanced and Single-Ended 2-channel analog
audio inputs can be set for either digital bypass mode (all DSP
processing switched off) or converted to digital format to allow bass
management, tone control and/or equalization. If no processing is
applied, analog signals remain in the analog domain, even if not
specifically set to digital bypass.
7 IR Input
Use the IR input when the front panel IR window does not have a clear
line-of-sight with the remote control, for instance, when the Delta PRE is
installed in a cabinet. Attach this input to an infrared repeater system to
route signals from the remote control to the Delta PRE via a mono mini-
jack (3.5mm phono).
TM
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