Presonus Eris 3.5BT Active Speakers with Bluetooth (Pair) Our best selling studio monitors just got better! Eris 3BT media reference monitors deliver studio-quality sound in an elegant, compact form factor that makes them ideally suited for bedroom studios, video production, and high-fidelity gaming setups. 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 and nature of the Eris 3.5BT's 3.5-inch woofer result in tight bass that you can feel, as well as cleaner overall sound. 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 previous designs delivers richer lows and a smoother crossover transition for articulate, accurate transient reproduction through the frequency range and a less-fatiguing listening experience. A convenient front-panel knob sets