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Qls QA390 - Tuning, Volume, Gain, and Sound Settings

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11
as a pure digital turntable, and it can save power.
ON: Analog power is fully turned on, headphone and line output are on
PO: Headphone output is on, line output is off
LO: Line output is on, headphone output is off
6.5 Tuning mode
Tuning mode has bright and mellow, equal to firmware shifting mode(default mellow)
6.6 Preamp volume
Fix: Preamp volume closed, output as the max volume
Adjustable: open the Pre-amp volume, can adjust the volume through knob and remoter
Note: when the Pre-amp volume can be adjusted, it is synchronization adjusted with the
headphone volume
6.7 Gain
Gain has four modes at low, medium, high and super high (default super high)
Low-resistance, high-sensitivity earbuds suggest that the gain is set to low or medium. If
you hear the noise floor, you can switch to the lower first gain.
6.8 AMP voltage
The AMP voltage has three structure at low, medium and high (default high)
Generally, the medium and high resistance headphone select headphone voltage is high, low
resistance headphone select headphone voltage is medium or low
6.9 Sound mode
Slow Roll-off (default)
Sharp Roll-off
Short Delay Slow Roll-off
Short Delay Sharp Roll-off
Super Slow Roll-off
Low-Dispersion
All to DSD: increase all formats to be 1Bit 5.6MHz which is two times of SACD output