Crown XFMR-4 4-Channel Transformer Rack Drawers Shelves & Trays The LA108-KIT-SA from QSC is

The LA108-KIT-SA from QSC is a stack adapter kit for LA108 speaker (speaker sold separately)

Single Zone Automatic Coverage™ technology captures talkers clearly with no setup

Freedom Stick X4 is bundle of four unique and versatile free-standing LED array lights

Normally Open (N/O) or Normally Closed (N/C) triggers allow the use of most common sensors

Crown XFMR-4 4-Channel Transformer Rack Drawers Shelves & Trays The LA108-KIT-SA from QSC isThe Crown XFMR 4 is a rack mountable transformer that provides impedance matching between amplifier outputs and "constant voltage" loudspeakers. This unit allows amplifiers without direct 70Vrms or 100Vrms output capability to drive distributed speaker systems designed to operate at those voltages.