Abstract: The present invention provides an earphone including a speaker unit, a rear cavity of the earphone, an audio signal wire and an extension tube which connects to the rear cavity of the earphone and accommodates the audio signal wire. The earphone also includes a sound guide tube which is located in the extension tube and extends in the same direction as the extension tube and connects the rear cavity of the earphone with the exterior space of the earphone. The audio signal wire is separate from the sound guide tube. The earphone of this structure can improve the low frequency characteristics of the earphone effectively and upgrade the low frequency sound effect of the earphone.

Abstract: The present invention discloses an earphone testing device. An earphone testing device provided by the embodiments of the present invention comprises an fixation base, a standard microphone attached to the fixation base, and a fixation scaffold for attaching and fixing the fixation base and the standard microphone; the fixation base is supported and fixed on the fixation scaffold by several supporting elements; a sealer is located on the position on the fixation base in contact with the outer shell of an earphone, the sealer forms an earphone storage portion for placing the earphone; a sealer is located on the position on the fixation base in contact with the outer shell of the standard microphone, the sealer forms a microphone attachment portion for attaching to the standard microphone; the earphone placed in the earphone storage portion and the standard microphone attached onto the microphone attachment portion are communicated with each other in the fixation base.

Abstract: The present invention discloses an earphone testing device. An earphone testing device provided by the embodiments of the present invention comprises an fixation base, a standard microphone attached to the fixation base, and a fixation scaffold for attaching and fixing the fixation base and the standard microphone; the fixation base is supported and fixed on the fixation scaffold by several supporting elements; a sealer is located on the position on the fixation base in contact with the outer shell of an earphone, the sealer forms an earphone storage portion for placing the earphone; a sealer is located on the position on the fixation base in contact with the outer shell of the standard microphone, the sealer forms a microphone attachment portion for attaching to the standard microphone; the earphone placed in the earphone storage portion and the standard microphone attached onto the microphone attachment portion are communicated with each other in the fixation base.

Abstract: The present invention provides an earphone including a speaker unit, a rear cavity of the earphone, an audio signal wire and an extension tube which connects to the rear cavity of the earphone and accommodates the audio signal wire. The earphone also includes a sound guide tube which is located in the extension tube and extends in the same direction as the extension tube and connects the rear cavity of the earphone with the exterior space of the earphone. The audio signal wire is separate from the sound guide tube. The earphone of this structure can improve the low frequency characteristics of the earphone effectively and upgrade the low frequency sound effect of the earphone.