Roland Jazz Chorus-77 Roland Jazz Chorus 77 ◯ After purchasing new, it was used at home for 4-5 years, then stored in a closet with a dedicated cover and cloth. ◯ Upon listing, I cleaned it (using a PC air duster and dry cloth) and confirmed its operation. ・ The sound changes of the jacks and various knobs seem to be fine. (I am an amateur, so there may be oversights.) Some knobs make a scratching sound when turned, but the noise decreased after turning them several times. ・ I could only check the volume up to about 3-4 because it was at home. Please understand. ◯ Purchased about 30 years ago. ・ It is relatively clean, but it is old. Please consider that there is some aging. Please refrain from purchasing if you are nervous. Thank you. The Roland Jazz Chorus-77 is a high-quality guitar amplifier with distortion and treble controls. - Brand: Roland - Model Name: Jazz Chorus-77 - Type: Guitar Amplifier - Input Terminals: High/Low - Controls: Distortion, Volume, High Treble, Treble Thank you for viewing.