Output Power (PMPO)-Audio Systems
PMPO stands for Peak Music Power Output. In India, audio systems are usually rated in terms of the PMPO. Music professionals feel that it is not the PMPO, but the RMS (Root Mean Square), which is the correct and more technical way of measuring music power output. Roughly 8 watts of PMPO power is equal to 1 watt of RMS power. The higher the PMPO (or RMS), the louder you can play your music.