This is a buffer made by eva electronic. By using the included buffer-integrated cable, you can send the sound without loss. It can be used with various instruments such as electric guitars, basses, and acoustic-electric guitars. I've tried buffers from various manufacturers such as Empress and Providence, but eva electronic's product had the most natural and full sound, and the subsequent effects pedals responded very well. Just placing it at the beginning of your board will drastically change the sound image. This time, I am selling this because I have introduced another eva electronic product due to a system change. It seems to be a discontinued product. Retail price: 40,000 yen. The impedance conversion is performed closer to the instrument than other products, so you can get a fuller sound. It also has tone and level controls, and I think this product specification is the best for some people. http://www.evaemis.com/ptoduct63.html Since it has disappeared from the official website, please take a look here for details. The main unit has been tested and confirmed to work with 9V and 18V power supplies. In addition to the main unit, I will include a dedicated 5m shield cable and a buffer-integrated patch cable. Thank you.