Thank you for viewing. This is the Digitech Drop, a convenient effector that easily changes pitch. This is an item for the main unit only. (Adapters etc. are not included.) 【※Note】Although there are no problems with normal use, the sensitivity of the pitch change knob is a little poor, possibly due to individual differences, and it is a little difficult to align the light with the number of the target key. It is not recommended for those who change keys many times during a performance, but it should be fine for those who only use specific keys. Please understand that this is a used item, so there is some wear and tear, and Velcro is attached to the back of the unit. Thank you.