The COMP16 makes compression easier by offering 16 carefully selected presets for a wide range of applications, including vocals, percussion, fretted instruments, keyboards, stereo program material, and effects. Simply select a preset and adjust the input gain and makeup gain to your liking, and you're done. The backlit VU meter displays either gain reduction or output gain, and the bypass switch allows you to compare the processed signal with the original signal. ● Included: Box, Instruction Manual, Adapter ※ Box has a tear. Please understand that this item has been stored for a long time before purchasing. There are scratches and minor imperfections due to use. Please refrain from purchasing if you are sensitive to such details. No claims or returns accepted.