The BOSS FV-60 is a stereo volume pedal compatible with various instruments such as guitars and keyboards. With two input/output channels, it allows for independent volume adjustment of L/R channels and natural fade operations for stereo sources. It also features controls to individually set the maximum and minimum volumes, supporting nuanced expression in live performances and recording sessions. Despite its compact and lightweight body, it boasts a robust build and smooth feel, making it an attractive choice. It shows signs of use, but functions without issue.