Enjoy professionally accurate monitoring even in small production spaces with the Eris Studio 4 monitors. These Bi-amped two-way monitors produce 50 watts of full, tight low end with smooth, detailed mid and high frequencies. The PreSonus EBM Waveguide delivers detailed highs across a wide controlled sweet spot with rock-solid stereo imaging for a mix you can trust. The ported enclosure allows the Studio 4 to reproduce frequencies down to 55 Hz so you get true full-range audio from a compact speaker even in small home studios and mix rooms. And since the port is front-facing, the speakers can be placed closer to walls when space is at a premium. Featuring variable mid/high, low cutoff, and acoustic-space frequency controls, the Studio 4s can be tuned to your room and fit seamlessly into any existing system. Rear panel connections include balanced XLR, TRS, and unbalanced RCA inputs with a variable input gain for increased flexibility. And when you want to push the system to enjoy the sonic power of your project, do so without worry, as the Studio 4's internal limiting, temperature, and transient protection prevents bad things from happening to good audio.PreSonus ERIS-STUDIO-4 Features:4.5-inch, woven-composite, low-frequency transducer1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer100˚(H) x 60˚(V) EBM waveguide for wide sweet spotFront-firing acoustic port for superior bass-frequency reproduction and optimized, resonance-suppressing internal bracing50W, Class AB biamplification55 Hz to 20 kHz frequency response100 dB SPL (Peak, @ 1 meter)Acoustic Tuning controls: HF (±6 dB, continuously variable); Midrange (±6 dB, continuously variable), and Acoustic Space (flat, -2, -4 dB), plus highpass filter (Off, 80 Hz, 100 Hz)RF interference, output-current limiting, over-temperature, transient, subsonic protection and amplifier “soft start” feature (eliminates popping on power-up)Internal power supply with IEC connector and power switch with on/off LEDBalanced XLR and ¼-inch inputs and unbalanced RCA inputs PreSonus Eris Studio 4 4 Active Studio Monitor with EBM Waveguide.