Presonus Eris Sub 8BT; Active studio subwoofer with Bluetooth connectivity; 8" woofer; Frequency range: 30 - 200 Hz; Class AB power amplifier: 50W RMS; input level continuously adjustable (-30 dB to +6 dB); variable low-pass filter (50 Hz to 130 Hz); switchable high-pass filter at 80 Hz; phase switch; auto standby switchable; inputs; 2x 6.3mm balanced TRS jack, 2x unbalanced RCA, Bluetooth 5. 0; Outputs: 2x 6.3mm balanced TRS jack, 2x unbalanced RCA; shielded against RF interference, switch-on delay and output current limiter, overheating protection and subsonic filter; Dimensions(HWD): 298 x 250 x 323 mm; Weight: 7.38 kg