Reference site :
//audio.yoreparo.com/autoestereo/tegno-un-stereo-pioneer-modelo-deh-1550ub-t1175879.html
https://www.drive2.ru/c/965018/
//monitor.espec.ws/section14/topic52982.html
//monitor.net.ru/forum/pioneer-deh-1500-info-477172.html
//monitor.espec.ws/section43/topic223845.html
