4 в 4 выходных канала Автомобильный Аудио 4-полосный Высокоточный выходной активный преобразователь высокой до низкой частоты автомобильный хост-аудиоконвертер с задержкой REM

distort sound very easy , it is hard to adjust it, oscilloscope is must have tool for setting this LOC, i managed after losing nervs to find stable test signal sinvave 1000hz on 0,9 volt output,most of this LOCs sold on alliexpress are crap,if you must buy LOC on alliexpress go for units which have step down transformer per chanell or even better buy LOCs from brands like MUST,KICKER,ALPINE etc...