... allocated three 12AX7 tube amplifiers,two EL34 output tube JGY-103 characteristic:JGY-103has allocated three 12AX7 tube amplifiers,two EL34 ... ,effect loop,footswitch,4Ω,8Ω,16Ω,output line speaker,JGY-103 match for two celesuon G12T-75 speaker;JGY-104 match ...