(ONLY IN CONNECTION WITH THE STACKER 18811) With the help of this basic support, the stacker 18811 can be converted into a complete keyboard table stand in no time at all. The width of the complete table stand can be adjusted in five steps from 20.709 to 30.315". Additionally the depth of the upper support arms of the attachment can be adjusted in 4 positions enabling a free view of the lower keyboard. The 18811 stacker can also be adjusted flexibly in height and incline. The 18819 tray is optionally available as a support for smaller electronic equipment. Self-adhesive rubber pads prevent the instruments from scratching or slipping. On request, the table stand can be extended to a third level with the stacker 18822.