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The power supplies for DVDD, AVCC2, and AVCC3 tend to have noticeable changes in sound quality due to differences in power supply quality, capacitor values, and type of decoupling capacitor. There is not much impact if DVDD1 and DVDD2, AVCC2_L and AVCC3_L, and AVCC2_R and AVCC3_R are used with a common power supply.