USB Speaker volume is turned up to maximum distortion, why it will have distortion?
USB SPEKAER can carry it is because there are built-in lithium battery, usually, USB SPEAKER output power of typically 1W to 3W, because the built-in lithium battery, only for the low-power amplifier circuit. Otherwise, the battery does not
Enough power. But also in the case of sufficient power, used usb flash drive and SD card USB SPEAKER could be 4-5 hours of continuous playback. Therefore, USB SPEAKER because of power limitations sound, the volume will be limited, to let the USB SPEAKER output more bigger, we must maximize the output power, while the actual power of the largest USB SPEAKER on the 3W, it is usually open to the maximum, the designers to expand the sound, the actual voice of 3W is limited, thus avoiding peak not sound distortion, so if the USB SPEAKER open to the maximum, there will be voice distortion, if only the sound transferred undistorted output power, audio output small.
