Enjoy quality, affordable sound with this pair of Klipsch Reference R-40M Bookshelf Speakers. With 50W RMS / 200W peak handling power and a sensitivity of 91 dB, the R-40M are easy to drive, compatible with most home audio amplifiers or receivers, and usable with stereo or surround sound systems. At less than 12" tall, the R-40M are among the most compact bookshelf speakers from Klipsch. With a sleek cabinet design and magnetic grilles these speakers integrate well with most décors and can be placed on a flat surface or mounted with the keyhole wall mount.