Tone control bass 10dB at 100Hz, 6 mic & 2 aux input, signal noise ratio 60dB, speaker output 4Ω, treble 10dB at 10kHz, output preamp 200mV / 600Ω, 8Ω, 70V and 100V, digital player MP3 player with USB, instant transfer to DC power, SD and MMC card reader, power supply AC 220-240V 50 / 60Hz, DC 24V 2×12V car battery, power consumption AC 460VA, 450 x 160 x 340 mm dimensions, 16.0 kg weight.