Karaoke Hyper Moriage-kun HM-15000 Regarding the main unit, I believe there are no particular problems with the volume, tone, and echo effects. The drawbacks are slight discoloration of the main unit and peeling paint on the microphone due to aging. Please understand that this is a used item before purchasing. Please refrain from purchasing if you are sensitive to such matters. There may be fine scratches and marks on the main unit. The images are everything. Please check carefully. Please contact us with any questions before purchasing. Miscellaneous Goods - 1