Samson Resolv A5 2-Way Active Studio Monitors Two-way, active studio reference monitor with ported tuned enclosure, Active crossover utilizing a multi-pole design for linear response from bottom to top 5-inch woven carbon fiber woofer for tight and controlled low frequency response, Four-position high frequency lift control, AV shielded for multimedia applications 1.25-inch silk dome tweeter with neodymium magnets, heat-sink and Ferro-fluid cooling for smooth and sweet high frequency response Low diffraction waveguide, 1/4-inch balanced inputs as well as unbalanced RCA inputs, Solid MDF (Medium Density Fiberboard) construction for maximum SPL Bi-amp power with 50 watts on the LF driver and 20 watts on the HF driver. Frequency response: 50Hz-30kHz