PreSonus Eris E4.5 Studio Monitors, Pair

The ultra-compact, affordable Eris E4.5 2-way, powered studio monitors deliver a very accurate response with tight bass, present mid-range and very clear upper end and can be user-adjusted to the acoustic space– a feature not typically available in this price point—making them a great choice for musicians including those who are creating their first recording in a small room.
The Eris E4.5 powered speakers deliver amazing sound quality in a compact package. Perfect for home studios or as high-fidelity replacements for computer speakers, Eris E4.5s pack a serious punch, thanks to 4.5-inch Kevlar low frequency transducers; 1-inch, low-mass, silk-dome tweeters; responsive 25W Class AB amplification per speaker; and professional acoustic-adjustment controls, the diminutive Eris E4.5 represents an outstanding value in its class. Unlike comparably priced studio monitors, Eris E4.5 has controls for simulating different listening environments and flattening frequency response to enable more accurate mixing.
PreSonus Eris E4.5 Studio Monitors feature:

4.5-inch Kevlar low-frequency transducer
1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer
50 watt, Class AB amplification (25W/side)
RF interference, output current limiting, over-temperature, transient, and subsonic protection
Optimized, resonance-suppressing internal bracing
Balanced ¼-inch TRS, unbalanced 1/8-inch TS, RCA, and bare-wire inputs
1/8-inch stereo headphone output and bare-wire power-amplifier output
100 dB maximum continuous SPL
70 Hz - 20 kHz frequency response

Acoustic Tuning control for accurate mixing contour: 

Midrange(±6 dB, continuously variable) 
HF (±6 dB, continuouslyvariable) o High-Pass (Off, 80 Hz, 100 Hz) 
Acoustic Space settings (flat, -2, -4 dB)