Divisor de señal de audio estéreo de 4 entradas 2 salidas RCA / selector de conmutador preamplificador pasivo
Stereo 4 in 2 out / 2 in 4 out RCA signal input audio splitter / switcher. Passive device, simple without worrying about sound effects, pure manual DIY welding. Ground left and right channels for different audio atmospheres.