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Bluetooth audio delay usually comes mainly from encoding, buffering, transmission scheduling, decoding, and playback processing.

Phantom power supplies compatible microphone electronics through a balanced audio connection.

The same headphones can play at different levels from a phone, laptop, or dedicated interface.

A subwoofer watt rating does not tell you how deep, clean, or even its bass will sound in your room.

A balanced audio connection can reject interference that appears similarly on its two signal conductors.

A ground loop can introduce hum when connected audio equipment has multiple conductive paths between reference points.

Class D describes a switching amplifier output stage, not a guarantee that its input signal is digital.

Clipping happens when an audio stage cannot reproduce the requested signal amplitude.

An 8-ohm speaker is not a fixed 8-ohm resistor across the audio band.

A 100-watt amplifier does not make the same speaker sound twice as loud as a 50-watt amplifier.