Introducin: The function of voltage-fixed amplifier SBKIII series Type SBKIII300 SBKIII400 SBKIII500 SBKIII600 SBKIII800 SBKIII1000 Reted output power 300W 400W 500W 600W 800W 1000W Accessional function five subarea Size(mm) 480x460x132 Weight(kg) 12. 5 13. 5 14. 5 15. 5 16. 5 17. 5 SBKIII Series Power Amplifier Rated output voltage: 70V-120V Rated load impedance: 4ohm~16ohm Frequency response: 100Hz~10KHz± C2dB Total harmonic distortion: 100Hz~10KHz<=1% Signal noise tatio: >=90dB Input sensitivity: 0dB Output level modulation: <=1dB Accessional function: Five subarea Voltage of supply: AC220V± 5% 50Hz± 2Hz