PTR PreSonus Eris E4.5 Studio Speaker Monitor

Features : - 4.5-inch Kevlar #34; low-frequency transducer - 1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer - Front-firing acoustic port for superior bass-frequency reproduction - Optimised, 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 #39; #39; #34;soft start #39; #39; #39; feature eliminates popping on power-up - Internal power supply with IEC connector - Power switch with on/off LED - Balanced #34;-inch TRS and unbalanced 1/8-inch TS, RCA inputs - 1/8-inch stereo headphone output