This unit is sold as untested as it. Missing a knob as shown. See pictures.

The Pioneer AVIC-D1 Car Stereo is a high-quality radio unit designed for vehicles. With its sleek design and user-friendly interface, this car stereo offers a seamless audio experience while on the road. The Pioneer brand is known for producing reliable and top-notch audio products, making the AVIC-D1 a great choice for car owners looking to upgrade their in-dash audio system.