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

The PreSonus Eris Studio 4 combines sonic accuracy with precision controls and flexible connectivity to set a new standard for compact studio monitors. Designed for high-level performance in both home studios and professional mix rooms, its crystal clear, extended low end and superior high-frequency response deliver honest, articulate sound in even the smallest of mixing spaces. Its custom-tuned EBM waveguide provides a wide, well-controlled sweet spot with lifelike stereo imaging for stunning sonic accuracy.

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).