4 Way High Power Stereo Speaker Switch - E-audio | CPC
Monacor Speaker Switch Box for 4 Pair of Speaker (200 WMAX) : Amazon.co.uk: Electronics & Photo
Monoprice 4-Channel A/B Speaker Selector with Volume Control : Amazon.co.uk: Musical Instruments & DJ
Xtrempro 61048 2 to 4 Way Speaker Switch, 1 in 2 Out to 1 in 4 Out Way Pair Stereo Speaker Selector W/Terminal Clamps Metal Non-Slip Box - Black (1 x 2 Way): Amazon.co.uk: Electronics & Photo
4 Way Speaker Switch - Connects 4 Pairs Of Speakers | Cables 4 ALL