I purchased this a month ago. I haven't used it live. There's a small paint chip on the upper left part of the switch since I received it. Here's the product description: Compared to the original, this has been modified for a more vibrant and glossy sound. ★ The toggle switch on the left side of the unit allows you to switch between the normal mode, which features the mid-range characteristics of the TS, and the high-gain & FAT mode (Keeley Baked Mod Mode), which adds thickness to the core sound. ★ The 3-way switch on the right side of the unit allows you to select clipping - TS (Tube Screamer), DB (Dumble ~ Comp Cut Booster Mode), and MS (Marshall Governor TUBE) modes. ★ TS-808 MOD is also installed. ■■■TWIN DRIVE Mode■■■ By switching the footswitch added on the top of the unit, it switches to the (GAIN②) knob on the side of the unit. Practical use is possible, such as setting different settings for backing and lead and switching instantly. The ON-OFF check lamp is ultra-high brightness BLUE (blue) during normal operation, and the check lamp switches to ultra-high brightness RED (red) in BOOST mode. The OPAMP is equipped with a Toshiba TA7558P. A socket is installed, so it can be replaced freely. It supports both 9V batteries and AC adapters.