Qudelix 5K User Manual page 16

ES9218P - DAC Operating Profile
Qudelix's proprietary software drives ES9218p DAC in two different ways to trade off the battery
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time and sound quality.
Standard Profile (ECO mode)
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Standard DAC Operating Clock
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Standard Output Bias Current
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Best Efficiency
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Best trade-off for battery time and sound quality
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Suitable for mobile and outdoor use cases
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Performance Profile (SPORT mode)
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Highest DAC Operating Clock
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High Output Bias Current
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Best Performance
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Best Sound Quality with lesser battery time
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USB powering to the device overrides the current profile and switches it to PERFORMANCE
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automatically.
In addition to the output power mode option, 5K provides two different operating profiles, to trade
off the battery time and Sound Quality,
BL(Blue Lower)