Active 4.5-inch reference monitors with Bluetooth. 4.5-inch woofer and 1-inch tweeter. Fast, reliable wireless stereo Bluetooth 5.0 input. Balanced ¼-inch TRS inputs, unbalanced 1/8-inch stereo and RCA inputs. Acoustic high and low-frequency controls with 100 dB. Energy-saving mode (activates after 40 minutes). RF interference, output current limiting, over-temperature, power on and off transients, subsonic filter. The Eris 4.5BT media reference monitors deliver studio-quality sound in a sleek, compact format, making them ideal for home studios, video productions, and high-fidelity gaming setups. With a power output of 25 watts per side, the Eris 4.5BT reference monitors provide impressive performance while ensuring clear and precise audio playback. The fabric and structure of the 4.5-inch woofer in the Eris 4.5BT produce rich, palpable bass and a clear sound image. The 1-inch silk dome tweeter generates refined high frequencies and is designed to radiate sound in a wide pattern, creating a large optimal listening area. The improved intonation of the speaker compared to previous models results in fuller bass and a smoother transition, leading to articulated, precise transient reproduction across the entire frequency range and a less fatiguing listening experience. A convenient knob on the front adjusts the level of the power amplifier and the loud, clear headphone amplifier, which connects via a jack on the front. With four types of inputs, including the fast and reliable Bluetooth 5.0 stereo connection, you can connect nearly any audio source to your Eris 4.5BT reference monitors. The high and low-frequency controls allow you to easily adjust the frequency response of your Eris speakers to compensate for room acoustics and achieve the best possible sound reproduction.