Noise sources that influence sound quality can be suppressed in order to achieve higher quality playback by stopping all of the following circuits.

Recording output circuit

Non-signal state detection circuit

Headphones circuit


Enables the high sound quality mode (PUREST mode).


Disables the high sound quality mode (PUREST mode).

When PUREST mode is on

Audio output from the recorder output connectors stops.

The auto standby function stops working.

When headphones are connected, the headphones circuit is activated and the sound output from the headphones.

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