PreSonus Eris Studio 4 — 4.5 inch 2 Way Active Monitors with EBM Waveguide

Professional studio monitors for music and other audio production. Superior high-frequency reproduction: 1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer for crystal-clear, natural high end. Custom-tuned 120˚(H) x 60˚(V) EBM waveguide provides a wide sweet spot for superior stereo imaging. 4.5-inch, woven-composite, low-frequency drivers produce a powerful, accurate, and smooth bass response with extended low end. 55 Hz to 20 kHz frequency response. Front-firing acoustic port for superior bass-frequency reproduction and optimized, resonance-suppressing internal bracing. Loud and clear: 50W, Class AB biamplification delivers up to 99 dB SPL (Peak, @ 1 meter) without sacrificing tonal balance or audio clarity. All the connections you need: Balanced XLR, balanced ¼-inch TRS, and unbalanced RCA inputs. Customize for your room with precise Acoustic Tuning controls: HF and Midrange, highpass filter, and Acoustic Space control (flat, -2, -4 dB) to compensate for speaker position near a wall or corner. Protection features: RF interference, output-current limiting, over-temperature, transient, subsonic protection and amplifier “soft start” feature (eliminates popping on power-up).