Mark Levinson 390S Owner's Manual download pdf (Page 25)

Caution: Do not switch power off and on rapidly, as this interrupts the

normal power-up sequence. We advise waiting at least five

seconds between power cycles.

2. Digital Outputs

These outputs provide digital audio signal (DAS) via cables

equipped with either XLR-type or RCA-type connectors to a

digital audio processor.

The XLR output conforms to the Audio Engineering Society/

European Broadcast Union (AES/EBU) professional digital

audio standard, which calls for a 110Ω transmission of the

DAS. Use a digital interconnecting cable specifically designed

for the 110Ω AES/EBU standard when using this input, with

pin assignments as indicated below:

Pin 1: Signal ground

Pin 2: Signal + (non-inverting)

Pin 3: Signal – (inverting)

Connector ground lug: chassis ground

It has been Mark Levinson’s experience that the AES/EBU

interconnection standard offers the best quality of all digital

transmission interfaces when fully optimized, and we

recommend its use wherever possible between Mark Levinson

components.

However, optimizing any electrical digital interface completely

represents a significant engineering challenge. It is entirely

possible that a different type of input may actually outperform

a less-than optimized AES/EBU implementation on some

brands of digital components. For this reason, we have gone

to great lengths to fully optimize both of the digital outputs

on the Nº390S. If you are using your Nº390S with a different

brand of processor, we recommend experimenting to determine

which type of input on that component results in the best

audible performance.

The RCA output provides digital audio signal (DAS) via cables

equipped with RCA-type connectors to the digital processor. It

conforms to the Sony/Phillips Digital Interface Standard

(S/PDIF), which calls for a 75Ω transmission of the DAS. Use a

digital interconnecting cable specifically designed for the 75Ω

S/PDIF standard when using this output.

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Mark Levinson 390S Owner's Manual Page 25