With 4 driver units, this product can produce 42 watts (RMS) output power, best fitting any space in your house for a great listening experience. With the enrichment of 2-way active crossover control, this product is perfectly tuned to satisfy your pursuit of quality sound. Two 4-inch mid-range / bass drivers create rich lows. Meanwhile, two 0.5-inch silk diaphragm treble drivers produce crisp highs.