Review on 🚗 Enhance Your Car Audio Experience with Planet Audio Half-DIN Band Car Equalizer - Subwoofer Output, Adjustable Filter & Fixed Bands by Roman Niko

Generally good. I knew I had to connect it to understand it. A catch can be noticed by others. You cannot use the Bass EQ boost if you are using the Sub-X-Over output at the same time. My amp already has that, but if you boost 20Hz at 18dB and use a subwoofer on the rear outputs instead, it sends those powerful low signals to the mids and highs. You need another amplifier with a high pass filter to roll off those low frequencies. Update, like others, this device makes noise, especially a low-frequency rumble, at higher volumes it becomes noticeable.