We are unable to negotiate prices on this item. This might be perfect for those who want great sound but don't want complicated operations. This compressor is based on a famous studio unit, so you can get a natural and musical sound without losing any sound quality. I think it will be useful if you want to easily create professional-quality sound, whether for guitar or bass. Operation has been confirmed, so once you receive it, you can use it immediately by connecting a 9V battery or AC adapter (sold separately). Manufacturer: Demeter Amplification Accessories: Body only Model Number: comp-1 opto compulator [Condition of the item] There are no noticeable scratches or stains, and it is in relatively clean condition. As it is a used item, there may be fine scratches or marks associated with use that cannot be captured in the photos, so please understand. Please check the details in the photos. Simple cleaning has been done using alcohol. [About packing and shipping] The item will be carefully wrapped in bubble wrap and shipped in a cardboard box. We will take thorough measures against impact, so please rest assured. [Other product information (excerpted from the manufacturer, Amazon, etc.] ① The studio's famous LA-2A in a pedal Developed based on the studio recording masterpiece "Teletronix LA-2A". It provides a compact pedal with a clear, dense, and tight professional-quality sound across all frequencies. ② Versatility that can be used with both guitar and bass It works great with guitar, and also with bass. The presets for attack and release are excellent, and even when used with bass, the sound doesn't start unnaturally, allowing you to create a sound that can be used directly in recording. ③ Intuitive and musical sound making You can operate it intuitively with only two knobs: "Compress" and "Volume". It has a soft-knee type natural compression curve, and you can create sound without losing musical texture, from subtle enhancement to a sound with good grain. ※The above is based on information from the manufacturer and sales sites. Due to differences in versions, the specifications of this product may not completely match.