SCD-1, SCD-777ES - Sony Audio Service Manual (repair manual). Page 4

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Although there are optical and coaxial digital output terminals,  only CD sound output is possible. SACD sound cannot be digitally

output.

Digital sound output can be turned ON/OFF with the “DIGITAL OUT” button. When this button is turned OFF, the digital output circuit

will be turned off and signal output itself stopped.

If this switch is turned OFF and the LINE OUT BALANCED terminal is not used, the LINE OUT BALANCED output circuit will be

turned OFF and the sound quality of LINE OUT UNBALANCED output somewhat improved.

With the SACD’s DSD format, signals of 20kHz or over can be played. However, transistor damage could result from inputting high-

level, high-frequency signals to the amplifier. The STANDARD mode is thus set when the player is shipped to set a cutoff frequency that
lowers output signals to a level that will not damage a general amplifier.

Only when the player is used in combination with Sony’s TA-E1 preamplifier and TA-N1 power amplifier can CUSTOM mode be

selected, the characteristics of the output signal’s cutoff frequency modified, and music played at even higher sound quality (see Fig. 1).

Do not select CUSTOM mode when using the player with amplifiers other than Sony’s. To prevent amplifier damage resulting from

careless setting, a screw is used to fix the selection switch on STANDARD mode when the player is shipped.

50kHz

100kHz

-18dB

-30dB

Frequency

Level

CUSTOM

STANDARD