Fully functional. Comes with ACR-3 knob and cable. The AudioControl DQDX is a six channel digital signal processor designed for car audio systems. It features dual-band equalization, crossover capabilities, remote level control, signal delay, and balanced preamp inputs. This versatile product allows users to adjust and enhance their audio signal for a customized listening experience. The AudioControl brand is known for high-quality audio equipment, making the DQDX a reliable choice for car audio enthusiasts looking to upgrade their sound system.
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