Akai Professional RPM500 Bi-Amplified Studio Monitor with Proximity Control 90 Watt (50 + 40) distributed Class A/B power 5" woofer; 1 1/2-Inch silk dome tweeter Proximity Control instantly adapts the monitor to any mixing environment Woven Kevlar woofer provides lucid low-end agility Reproduces complex, modern music with ease and transparency