Klipsch R-15PM Powered Monitor - Black (Pair) The R-15PM powered monitors deliver room-filling sound without taking up much space 1 x pair of RCA phono level inputs with switch for Phono/Line input versatility (Phono Pre-amp with ground screw terminal) 1 x USB digital audio from a PC or Mac single RCA line level output for connection to sub. 1 x Digital optical, 1 x 3.5mm mini jack line level, Full featured IR remote. Bluetooth wireless technology