Thank you for viewing! This is the popular DPX series from the late 1990s, the DPX-700. Operation has been confirmed. CD and radio functionality were confirmed upon removal. The previous owner used the cassette function over 5 years ago, but the cassettes have been discarded, so the current status is unknown. Please refrain from purchasing if you intend to use the cassette function. Everything else has been confirmed. The electric display has 20-step angle adjustment, allowing for easy viewing depending on the vehicle it's installed in. The spectrum analyzer adds to the atmosphere of the time. DSP can be selected from several types. You can also listen without DSP. Unlike the DPX-500, 700, and 900, there are no issues such as the sound from the internal amplifier being different in volume between the front and rear, or the overall sound being quiet even at maximum volume. All 4 speakers produce sound strongly. These are becoming rare. There is some wear and tear on the exterior, but there is no damage around the display. How about it for those who want to use it for a long time? Thank you.