The Focal IBUS 20 is an 8-inch underseat amplified subwoofer that provides 75W RMS and 150W peak output. It delivers focused low-frequency extension with a sub frequency response of 45Hz-150Hz and compact enclosure dimensions of 71.5mm (2.8in) H x 344mm (13.5in) L x 250mm (9.8in) W.

The unit includes plug and play ISO cables for easy integration under a seat or in a trunk, accepts both high and low level inputs, and ships with a wired remote control for level adjustment. It is designed to intensify bass frequencies while fitting into limited installation spaces.