DS18 SLC-X1050.4 Select Series 4 Channel Class Ab Monoblock Amplifier - 1050 Watss Max Power The slc-x select Series are limited Edition and will not be in stock for long. Get yours today! 4 channel class AB amplifier - 1850 watts Max power Low Pass & high Pass Crossover - pre-amp outputs - 2 ohm stable circuits - four way protection circuits RMS output power ratings @ 4-ohms: 4 x 50 watts. RMS @ 2-ohms: 4 x 80 watts. RMS @ 4-ohms bridged: 2 x 160 watts. Frequency response: 20hz-20khz. Dimensions (L x w x H): 322mm x 210mm x 51mm.