Thank you for viewing. This is a standard bass preamp. The EQ is very effective, and I found it useful for live performances and home recording, but I am selling it due to a change in equipment. I originally purchased it used, so there is noticeable dirt. One of the screws on the back cover is also missing. I have used it for live performances until recently, and I have confirmed that it works, but please understand that it is a used item before purchasing. 2/8 Added: Price reduced.