Presonus Eris E5, Active Studio Monitor Set, 5.25"" (133 mm) woofer with Kevlar cone, 1""(25 mm) tweeter with silk cone, Power: Class AB power amplifiers with 45 / 35 W, Frequency range: 53 - 22,000 Hz, Gain control, Input impedance: 10 kOhm, Mid-range controls: Peak EQ, 1 kHz, +/- 6 dB, Treble controls: Cow tail filter, 4.5 kHz, +/- 6 dB, Switchable highpass filter: 80 Hz - 100 Hz, Acoustic-Space switch: -2 dB, -4 dB, Crossover frequency: 3 kHz, Maximum continuous SPL 102 dB, Input: XLR and jack (balanced) and RCA (unbalanced), Shielded against RF interference, Switch-on delay, Output current limiting, Overheating, transient and subsonic protection circuit, Dimensions (W x D x H): 178 x 198 x 260 mm, Weight: 4.63 kg, Includes: 2 Monitors (1 pair)