Presonus Eris 4.5-inch Near Field Studio Monitor Speakers, Pair

 
4.5-inch Kevlar® low-frequency transducer
1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer
Front-firing acoustic port for superior bass-frequency reproduction
Optimized, resonance-suppressing internal bracing
100 dB maximum continuous SPL
HF Driver Adjust (±6 dB, continuously variable)
Midrange Driver Adjust (±6 dB, continuously variable)
Acoustic Space settings (flat, -2, -4 dB) for accurate mixing contour
Highpass filter (Off, 80 Hz, 100 Hz)
50 watt, Class AB bi-amplification
RF interference, output current limiting, over-temperature, transient, and subsonic protection
Amplifier “soft start” feature eliminates popping on power-up
Internal power supply with IEC connector
Power switch with on/off LED
Balanced ¼-inch TRS
Unbalanced 1/8-inch TS
RCA inputs
1/8-inch stereo headphone output