Listening with High Sound Quality (Pure A)

 

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R-SG7/DP-SG7/X-SG7 (EN)

Listening in Pure A Mode

Setting to pure A operation mode (pure A) is recommended when listening with low volume close to the set or late at night. Then you can enjoy smooth high-quality sound with little dis- tortion.

Please use the normal mode to listen at higher volumes.

CAUTION

When pure A mode is selected, a certain amount of power is used even when no music source is played back, and the temperature of the amplifier section will rise.

1Switch on pure A.

pure

2Play the music.3Adjust the volume.

volume

pure A

control

 

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Lights

sectionPreparation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

volume

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R-SG7

 

 

 

 

 

 

 

P U R E

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section Basic

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R-SG7

 

 

 

 

 

 

 

 

 

 

 

 

V O L

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Volume indication

Application

÷ The volume indication changes to an indication matching

 

 

the low volume.

 

 

 

 

 

÷ When this is pressed again in pure A mode, normal mode

 

 

will be obtained. (The pure A indicator goes out.)

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What is Pure A?

The amplifier section amplifies the voltage and current of the input signal from the CD etc. and sends the output to the speakers. In order to suppress the distortion occurring with this amplification, amplifiers with class A operation or class AB operation always have current flowing through the circuits for current amplification. This is called the idling circuit. Especially an amplifier with class A operation has a high idling current in comparison to an amplifier with class AB operation, which is used by many units. As the result, class A operation has distortion suppressed to a minimum, and smooth playback with high quality is possible. However, as a certain amount of power is consumed even when no music source is played, the temperature of the amplifier section will become comparatively high. Thus a high-class amplifier with a large-capacity power supply is required to enjoy the sound quality of class A operation.

The amplifier of this unit normally operates in class AB operation, but as the high sound quality of class A operation can be enjoyed easily, a class A operation mode for listening at low volume (pure A) has been provided. Please enjoy the pure A sound quality when listening at low volume close to the set, late at night, etc.

sections Knowledge