Tenders for Supply of Amplifiers. Amplifiers Of Output Power 60Watt Rms Having 4 Mic & 1 Aux Inputs, Should Operate On Ac: 220- 240V 50/60Hz, Dc: 12V 12V Car Battery, Having Speaker Output Impedance 4 Ohms, 8 Ohms, 16 Ohms & 100V. Similar To Ahuja Make Model Ssb-60Em.