OSP Cases | ATA Road Case | Amplifier Case for Roland Jazz Chorus JC-120 Amp | ATA-JC-120 This ATA case is custom designed to fit the Roland JC-120 Jazz Chorus Dimensions Outer 32-1/2 x 16-1/2 x 28 (L x W x H) Inner30 x 11-1/2 x 24-3/4 (L x W x H) Ball Corners with Industrial Rivets and latches Incredible professional quality - built for the road! 3/8" Plywood with Black Laminate Tongue and Groove Metal Railing