This is a Guyatone AIR-1 amplifier for acoustic-electric guitars. I purchased it in the 90s. I haven't used it much, but there are several scratches from storage. Please check the images. Image 4 appears to be the residue of tape or a sticker that was removed. Operation has been confirmed. In my subjective opinion, there is almost no scratchiness. Please consider purchasing this item, keeping in mind that it is a used item. - Brand: Guyatone - Model Name: AIR-1 - Function: Natural acoustic sound - Controls: Trim, Master, Edge, Bass, Mid, Treble, Presence, Stereo Chorus, Ratio, Depth - Input/Output Terminals: Headphones, Audio In, Return, Send - Power: On/Off Switch Thank you for viewing.