Tascam VL-S3BT 14 Watt 2-Way Powered Desktop Monitors With Bluetooth Power amplifier output: 14W + 14W (LEFT speaker contains the power amplifier) 3-inch woofer/0.5-inch tweeter Specially tuned 8kHz crossover circuit Bass reflex port RCA terminals(stereo) and 3.5mm stereo mini unbalanced input