Presonus R80, Active studio monitor, 2-way monitor with ""Air Motion"" ribbon tweeter, 100/50 Watt Class D power amplifiers (LF / HF), 8"" woofer with kevlar membrane, Specially developed tweeter with very thin Kapton membrane (<0.01 mm), Tweeter surface: 4.4 cm², equivalent to a 3 ""dome, Transmission range: 40-22000 Hz, Crossover frequency: 2.6 kHz, Input sensitivity infinitely variable via gain potentiometer, Switchable height adjustment: linear / +1 / +3 / +6 dB, Switchable high-pass filter: linear / 60/80/100 Hz, Acoustic space switch for bass correction: linear / -1.5 / -3 / -6 dB, Boundary sound pressure level: 107 dB, Inputs: XLR, 1/4 ""jack (balanced), RCA (unbalanced), Input impedance: 20 kOhm (balanced), 10 kOhm (unbalanced), Shielded against RF interference, ON / OFF, Output current limiter, Overheat, transient and subsonic protection circuit, Energy-saving auto-standby mode - can be deactivated if required, Housing: vinyl-coated MDF, Blue front panel can be exchanged for the included black panel depending on your taste, Weight: 9 kg, Dimensions: 241 x 309 x 379 mm