PreSonus Eris Pro 4 4" Active Coaxial 2 way Studio Monitor STUDIO ESSENTIALS BUNDLE Audio & Recording Audio & Recording Accessories Cables and Adapters an exciting micro tuning feature and KUR ST3 an exciting micro tuning feature and more — all at an amazing price The SP 280 provides a playing feel that's incredibly close to that of an acoustic piano by switching between four piano samples according to the dynamics of your performance Acoustic tuning controls let you configure the Eris Pro 4 for your room and three way Acoustic Space tuning can compensate for the effects of speaker placement against a wall or in a corner The Eris Pro 4 reference monitors employ a single point source coaxial design for clear and accurate sound reproduction