Miraculous, brand-new, boxed item!! SANYO EXCEDIO brand Multi-type DSP sound processor compatible with decks from any manufacturer. This is a vintage item from approximately 30 years ago. It's already a rare product, and this is a miraculous item being brand new and unused in its original box. As you can see in the images, if you have + and -, and the PIN code (RCA) for audio signals, you can connect it regardless of the manufacturer and create a sound field with a sense of realism and fine-tune settings to your liking. *An external amplifier may be required, so please check the images. It's perfect for classic cars, but since the display also shows a spectrum analyzer, it might look stylish even in the latest cars. I predict that the display itself will have the warm color tones typical of the 90s (white or green?). It seems to have a detachable front face panel, so you might be able to have the control unit in your hand. (You can hide the main unit and place the control unit on the steering column or near the shifter, etc., without using the vehicle's 1DIN space) Personally, I think it would look cool installed in cars from the 80s and 90s. I've been carefully storing this, but rather than keeping it stored, I'd like to pass it on to someone who will use it with more care (someone who understands classic items), and I'm listing it with a heavy heart. I remember that even back then, there was no other multi-type DSP that would work with decks from any manufacturer if they had RCA outputs. This is an ultra-rare item, and I don't think you'll see a brand-new, boxed one like this again. (I'm listing it at this price this time, but as it's a valuable vintage item, I'm considering raising the price while watching the market.) 〖Regarding Transactions〗 It's a brand-new, boxed item, so I don't think there will be any problems, but as it's a one-of-a-kind item from that time, please understand that no returns or exchanges are possible to prevent substitution. Digital signal processor equipped with 5-band PEQ and 6 memory presets. - Brand: EXCEDIO - Model: DSP-01 - Functions: 5-band PEQ, 6 memory presets, center speaker AMP - Output Power: 30W - Input Impedance: 900Ω - Output Impedance: 100Ω-4kΩ (±3dB) Thank you for viewing.