Three-dimensional stereo vehicle-mounted sound equipment

A left rear upper loudspeaker is arranged on the inner side of the upper end of a left-side C column of a vehicle, a left front upper loudspeaker is arranged on the inner side of the upper end of a left-side A column of the vehicle, a right rear upper loudspeaker is arranged on the inner side of the upper end of a right-side C column of the vehicle, and a right front upper loudspeaker is arranged on the inner side of the upper end of the right-side A column of the vehicle. The left rear lower loudspeaker is arranged above a vehicle left rear door handle, the left front lower loudspeaker is arranged above a vehicle left front door handle, the right front lower loudspeaker is arranged above a vehicle right front door handle, the right rear lower loudspeaker is arranged above a vehicle right rear door handle, and the rear subwoofer sound box is arranged in a vehicle trunk. And a 4.1. 4 decoding reduction pre-stage power amplification module, a direct current voltage stabilization module and a post-stage power am