Reference-grade sound with EBM waveguide. The PreSonus Eris E7 XT Studio Monitors Pair with Stands can transform your studio setup. The PreSonus Eris E7 XT Studio Monitors build on the success of the original Eris series incorporating a cutting-edge waveguide for improved acoustic performance. The Eris E7 XT features a Kevlar woofer and silk dome tweeter providing powerful low-end response and articulate highs. The Eris E7 monitor features a range of acoustic tuning controls that allow you to adjust settings to the room you are in giving you the ability to work well in a range of untreated mixing environments. The premium-grade design provides you with clear consistent audio allowing you to produce professional mixes every time.