The Underbed Lift® from MK I Studio is the original.  We invented the concept and have been refining it for almost a decade.  A 50 panel with Amplifiers, DVD, VCR, Subwoofer, and 7 channels of surround can be concealed beneath a King size bed  and a 42” panel and all the same equipment can be concealed under a Queen size bed.  Both only take 35 seconds to deploy.  
 
The Underbed Lift® gives you the freedom to decorate any way you desire without having an entertainment center or cabinet as the main focal point. It also won’t take up your floor space or block the view out  of windows and doors.
Underbed Lift®
A bed skirt keeps the lift completely hidden
From the foot of the bed
Requires only 8” Under the bed
Raised and Rotated
Foot of the bed when raised
6 rack spaces for the needed equipment
View from the edge
Rotates for watching anywhere in the room
Alternate viewing location
Composite showing stages
Open Frame
Also works with adjustable beds