PreSonus Eris 4.5-inch Media Reference Monitors with Bluetooth® connectivity discontinued an add-on tone expander with

an add-on tone expander with other modelers

Lots of fun with big

Easily swappable battery provides 6 hours of play time

Fits Audio-Technica Case Styles: M14

a synthetic ivory-like material that mimics the tonal characteristics of natural bone

PreSonus Eris 4.5-inch Media Reference Monitors with Bluetooth® connectivity discontinued an add-on tone expander withEris 4. 5 BT 4. 5 inch Active Media Reference Monitors with Bluetooth 5. 0 Wireless Connectivity Eris 4. 5 BT media reference monitors deliver studio quality sound in an elegant, compact form factor that makes them ideally suited for bedroom studios, video production, and high fidelity gaming setups. Compact size with studio quality sound; 4. 5 inch, woven composite woofer and 1 inch, silk dome tweeter; Bluetooth 5. 0 wireless connectivity; inch