Are you looking for a natural compressor that doesn't thin out your sound, or do you want professional-quality sound without complex settings? If so, this might be for you. Highly regarded as a compressor for both guitar and bass, it allows you to create a rich tone with intuitive operation. You can start using it on your board immediately if you have a 9V power adapter (center negative, etc., a general effector power supply) and a cable. Manufacturer: Demeter Amplification Model Number: COMP-1 OPTO COMPULATOR Included Items: Main unit only 【Condition of the Product】 There are no noticeable scratches or stains, and it is in relatively clean condition. Operation has been confirmed, and it works without any problems. Since it is a used item, there may be minor dirt or scratches that cannot be captured in the photos due to use. Simple cleaning has been performed using alcohol. I try my best to convey the condition through the photos and the above descriptions, but please feel free to ask if you have any questions! 【About Packaging and Shipping】 It will be wrapped in bubble wrap to prevent water damage and then shipped in a cardboard box. 【Other Product Information】 ① Optical compressor developed based on the studio equipment classic Teletronix LA-2A ② Excellent compatibility with not only guitars but also basses, producing a thick sound without sound thinning ③ Simple knob configuration of Compress and Volume allows for intuitive sound creation ④ Side trim pots allow for fine-tuning of gain to match pickup output ⑤ Achieves a maximum gain reduction of 30dB, supporting everything from natural compression to deep compression ⑥ Achieves sound quality comparable to professional audio products and is a model loved by many professional musicians ※ The above information is based on information from the manufacturer and sales sites. Due to differences in versions, etc., the specifications of this product may not be completely identical.