kef subwoofer r400b, Kef Ls50 wireless + Kef r400b sub, KEF Pakistan - KEF's R400b Subwoofer may be compact, it packs an incredible punch. experience, visit, Competency Centre today! Get directions here, https://bit.ly/2IwVdAV or website: www.powerhouse.com.pk #Powerhouse #KEF #