I'm selling this because I don't use it much anymore. I loved using it because of the bell-like sound when I turned down the guitar's volume. Inspired by the Tone Bender, but not a Bender at all. That's the sound in a nutshell. While inspired by vintage Tone Benders, it has no vintage feel and no Bender feel... it's a fuzz pedal with a unique personality and sound. The bias SW on the top of the enclosure allows you to change the sound from smooth to a sputtering, gated fuzz. Furthermore, the buffer SW on the side of the enclosure significantly changes the sound, offering a wide variety of variations. By turning the buffer SW ON (up), the somewhat weak and fragile texture is completely transformed. You can get a smooth and powerful drive feel. Here's the manufacturer's description: Fuzz pedals have low input impedance, so their character changes drastically depending on the presence or absence of a buffer. For this reason, the IDEA-FZX ver.1 is equipped with a buffer ON/OFF switch, which is rare for fuzz pedals. It's a sound that feels like a vintage Tone Bender, but modernized. In addition, we were conscious of Marshall and modified Marshalls, and expressed a sound like driving the power tubes. This is a fuzz that you will never get with vintage clone types. This unit with this switch has been very well received by many professional musicians. ※ Top toggle switch Operating point = You can switch the bias in 3 modes. The distortion and response change drastically. ※ Side switch Buffer ON/OFF switch ・Connections: Input, Output, DC9V In ・Power: 9V battery, DC9V AC adapter (center negative) ・Dimensions: Width (W) 69 mm, Depth (D) 111 mm, Height (H) 47 mm ・Weight: Approximately 253g (without battery) ・Positive phase output