Headphones are not inserted into the ear canal and are different from earphones. It is composed of two parts, a signal transmitter and a headset with a signal receiving and amplifying device. The transmitter is connected to the signal source. You can also connect a pre-stage or headphone amplifier before the transmitter to improve the sound quality and adjust the tone.
Wireless headsets generally refer to headset systems that transmit signals by infrared rays, and cordless headsets refer to headset systems that use radio waves to transmit signals.
The biggest advantage of the in-ear type is that it saves electricity, and ordinary mp3 can be driven, and then it can avoid environmental noise. After all, the ears are blocked while listening to music. The main reason for the poor bass of the headset is that the sound unit reduces the cost, and some headsets have strong bass, but need computer CD and other equipment to drive, and the mp3 drive does not have the bass effect.
