BOSS Line Selector LS-2 Roland Effects Pedal Sound check confirmed, instruction manual and sample settings included. "For switching amplifiers The LS-2 is a line selector that switches between A/B lines and adjusts each output. There are 6 types of line select modes. It can be used for various purposes such as switching amplifiers and controlling the volume during solos and backing. It can also supply power to other compact series pedals. https://www.boss.info/jp/products/ls-2/" This is a used item, so there is some wear and tear. Please consider this before purchasing. Shipping will be via Rakuraku Mercari or Yuuyu Mercari. Everything in the pictures is included. Items not shown in the pictures are not included. Regarding return shipping costs due to differences between the actual product and the image, or other problems, the buyer will be responsible. Type...Electric Guitar Manufacturer...BOSS