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10
Rear Panel
e rear panel of the Delta PRE is shown above. e numbers in the drawing
refer to the descriptions in this section.
serial number You’ll nd your Delta PRE serial number on the rear panel, next to the AC Inlet.
Please record this number for future reference.
And since you have found the serial number, please use it to register your
purchase, if you haven’t done so yet. We may use the information to advise you
of any updates or other items of interest. Registration is simple, so please register
online at https://classeaudio.com.
1 Digital Audio Input - USB
e Delta PRE supports PCM digital audio sources up to 32-bit/384kHz
and DSD at native rates up to 256 (requires esycon/Classé driver for
Windows) and as DoP (DSD over PCM) at rates up to 128 via USB. e
rear panel USB Device connector mates with a USB Host such as a PC or
Mac.
Volume control changes made on your USB source will adjust volume in the
analog domain in the Delta PRE, which oers the highest performance. e
alternative, which is to adjust volume in the digital domain, causes loss of
resolution. Attentuation in the digital domain involves using fewer bits, so we
avoid it wherever possible
2 Digital Audio Input - AES/EBU
e Delta PRE provides an XLR type connector for digital audio
connections from source components such as CD players tted with this
professional-standard output. ese 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 and that carry a
110Ω impedance rating. Your Classé dealer can help you with proper cable
selections.
3 Digital Audio Inputs - Coaxial
e Delta PRE supports three digital audio inputs, with SPDIF connectors
labeled COAX1 to COAX3. ese 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 and that carry a
AUX 1
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.
OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:
(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND
(2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,
INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.
OPT1
AES/EBU
OPT2 OPT3
ETHERNETUSB
IR
CAN BUS
RS-232
ANALOG AUDIO IN
PHONO
L4R4 LRL3R3
L2R2L1R1
COAX1 COAX2 COAX3
OUT
IN
2
1
DELTA PRE
CAUTION! TO REDUCE THE RISK OF ELECTRIC SHOCK, GROUNDING
OF THE CENTRE PIN OF THIS PLUG MUST BE MAINTAINED
ATTENTION! POUR RÉDUIRE LE RISQUE DE CHOC ÉLECTRIQUE
LA FICHE CENTRALE DE LA PRISE DOIT ÊTRE
BRANCHÉE POUR MAINTENIR LA MISE À LA TERRE
MAIN L
MAIN RAUX 2
ANALOG AUDIO OUT
SUB
TRIGGER
GND
DIGITAL IN
100-120~ T2AE 250V
220-240~ T1.25AH 250V
Conforms to ANSI/UL Std.60065
Cert. to CAN/CSA Std. C22.2 No.60065
15 12 16 1 13 2
3
4
6
14
5
10 11
9 7 8
17
18
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