The speaker from Fostex belongs to the category of self-powered speakers. This means that it has a built-in amplifier, so it does not need to be connected to one in order to function. This feature allows you to connect a turntable with a preamp and enjoy your favorite music. The power is W RMS and it is 2 way, meaning the sound frequencies are reproduced by two speakers, one tweeter for the high frequencies and one woofer for the low frequencies.