Power amplifier type adjustable circuit, power amplifier module and playing equipment

The utility model discloses a power amplifier type adjustable circuit, a power amplifier module and playing equipment, and the power amplifier type adjustable circuit comprises a first amplification circuit which is used for carrying out the differential amplification of an accessed audio signal, and then respectively outputting a first audio amplification signal and a second audio amplification signal through a first output end and a second output end; the first input end and the second input end of the bias voltage regulation circuit are connected with the first output end and the second output end of the first amplification circuit in a one-to-one correspondence manner; and the adjustment trigger circuit is used for controlling the bias voltage adjustment circuit to carry out voltage adjustment on the first audio amplification signal and the second audio amplification signal when the adjustment trigger circuit is triggered, so that the first amplification circuit works in a power amplification state corres