Harper

Harper Amplifiers have been manufacturing amplifiers in small series since 1998. First solid state models like Stage-15, Stage-25, Stage-25 Tilt back, Stage-Bass 30 and Stage-Bass 28.

After that only tube amps were added. Silvertube-25 10″, Silvertube-25 12″ and the Silvertube-25 with 10″+12″.