Features that are usually only found on high-end, expensive studio monitors are included on the rear panel of the M-Audio BX3. High-EQ and Low-EQ controls dial in the perfect sound for your environment and let you customize the sound of the BX3. The Left/Right Active Speaker Position Switch lets you choose which speaker is the Left or Right side. This is very useful if you are left-handed and want the speaker with the front panel volume control on your left side. It’s your choice!