B-Stock, Neumann KH 810, Active Studio Subwoofer, 7.1 High Definition Bass Manager, Frequenzy Response: 18 Hz - 300 Hz, 110.7 dB SPL (1m), crossover frequency: 80 Hz, Magnetic shielded, Output analogue: 8x XLR, Dimensions: 360 x 330 x 645 mm, Weight: 26 kg, B-Stock with full warranty, may have slight traces of use