Vocal effects unit with a variety of effects such as harmony and echo. - Model: TC-Helicon Harmony G - Type: Vocal effects unit - Power supply: AC adapter included - Input/Output terminals: XLR output, guitar input, microphone input - Functions: Harmony, echo, reverb, and other effects - Operation buttons: Manual, Double, FX, Voice 1, Voice 2 buttons I used it at home for recording, so there are no noticeable scratches. Thank you for viewing.