PreSonus® Eris-series studio monitors are used worldwide by audio engineers who need to hear every detail of their recordings. Ideal for gaming and home video production, the Eris E3.5 employs the same technology as the larger Eris models to deliver studio-quality sound, with a smooth and accurate frequency response. Yet they’re compact enough to fit almost anywhere. Every Eris-series studio monitor utilizes a woven composite, low-frequency driver. The weave and nature of the Eris E3.5’s 3.5-inch woofer result in a more constant dispersion pattern throughout the frequency range, resulting in less time-smeared audio and cleaner overall sound.
 
Features: 
Components and construction
3.5-inch (89 mm) woven composite low-frequency transducer
1-inch (25 mm), ultra-low-mass, silk-dome, high-frequency transducer
Rear-firing acoustic port for superior bass-frequency reproduction
Optimized, resonance-suppressing internal bracing
User controls
High- and low-frequency tuning controls
Front-panel Volume control for speakers and headphone amplifier
Power and safety
50 watt (25W/side), Class AB biamplification
RF interference, output current limiting, over-temperature, transient, and subsonic protection
Amplifier “soft start” feature eliminates popping on power-up
Internal power supply with IEC connector
Power switch with on/off LED
Inputs and outputs
Balanced ¼-inch TRS, unbalanced 1/8-inch stereo, and RCA inputs
Integrated stereo headphone amplifier with front-panel 1/8-inch output