Quik-Lok BS-300 Height Adjustable Near-Field Monitor Stand (Single) The Quik-Lok BS300 is a Height-Adjustable Near-Field Monitor/Speaker Stand. The BS-300 is designed for home, project and recording studios. With a stable, 3-point triangle base with adjustable leveling floor spikes. The QuikLok BS300 can support up to 100lb/45.2kg on its large, sturdy 9 inch/23cm square metal top plate.