Bogen GS150D Gold Series Amplifier 4 dedicated MIC inputs 1 selectable MIC/TEL input / 1 selectable MIC/AUX input / 1 dedicated AUX input 4-ohm, 8-ohm, 25V, 25VCT, and 70V transformer-coupled outputs Dual-function, 10-band graphic equalizer (Acoustic EQ or Feedback Control modes) Remote master volume control capability