Shuguang 2A3C (replacing 2A3B)matched pair vacuum tube amp Specifications1,Excellent Sound Quality 2,high quality components 3,shuguang vacuum tube 4,vacuum tube amp 5,amplifiers tube amps Shuguang 2A3C (replacing 2A3B)matched pair vacuum tube amp1,Excellent Sound Quality 2,high quality components3,shuguang vacuum tube4,vacuum tube amp5,amplifiers tube amps