1.2 Way stereo speaker control, allow conventional amplifier or stereo receiver to drive multiple sets of speakers, without the need for external impedance matching devices <br><br>2.Ideal for low cost distributed audio in residential or commercial sound applications <br><br>3.Just hooked up to the stereo.No extra power supply needed <br><br>4.Individual control of each speaker pair. Impedance constant at 4-8 Ohms, 100WRMS, 200W max <br><br>5.Speakers connected must be no less than 8 ohms