PreSonus Eris Studio 5 - 5.25" Studio Monitor (Single)

5.25-inch woven composite low-frequency driver 1-inch, ultra-low mass, silk-dome, high-frequency driver 80W, Class AB dual amplification 48 Hz to 20 kHz frequency response Sold Singley

PreSonus Eris Studio 8 Studio Monitor (Single)

8-inch woven composite, low-frequency transducer Balanced XLR and ¼-inch inputs and unbalanced RCA inputs 140W, Class AB biamplification Front-firing acoustic port 

PreSonus Eris 4.5BT Bluetooth 4.5" Studio Monitors - Gen 2

Bluetooth 5.0 wireless audio stereo input 4.5-inch woven composite low-frequency driver Acoustic Tuning Controls 50W, Class AB dual amplification