120W 4x12 Guitar cabinet? take for instance these http://www.guitarcenter.com/Line-6-Spider-III-120-60Wx2-2x10-Stereo-Guitar-Combo-Amp-103944740-i1168991.gc
and
http://www.guitarcenter.com/Marshall-MG412A-or-MG412B-120W-4x12-Guitar-Extension-Cabinet-101644409-i1145923.gc