PreSonus Eris-series studio monitors are used worldwide by audio engineers and producers who need to hear every detail of their recordings. Eris 3.5BT media reference monitors deliver studio-quality sound in an elegant, compact form factor that makes them ideally suited for use as bedroom studio speakers, turntable and record player speakers, video post-production speakers, or high-fidelity audio monitors with Bluetooth. With 25 watts per side of onboard power, the Eris 3.5BT reference monitors pack a serious punch, while still delivering clear, accurate audio. The weave of the 3.5-inch woofer results in tight bass that you can feel, while the one-inch silk-dome tweeter produces refined high-frequencies and is designed to radiate sound with a wide pattern, creating a large optimal listening area. Improved speaker voicing over the previous first generation design delivers richer lows and a smoother crossover transition for articulate, accurate transient reproduction throughout the frequency range and a less-fatiguing listening experience. A convenient front-panel knob sets the level of both the power amp and the loud, clear headphone amplifier, with its front-panel jack. With four types of inputs, including fast, reliable, stereo Bluetooth 5.0 connectivity, it's easy to connect just about any audio source to your Eris 3.5BT reference monitors. High- and low-frequency controls let you easily adjust the Eris speaker's frequency response to compensate for the acoustics of your space and create the most accurate sonic reproduction possible. Need a little more low end? Put some boom in your room with an Eris Sub8 BT to build a perfectly matched 2.1 sound system that fits almost anywhere.