Accessories for MXSA1 Keyboard Stand. Creates a Complete Workstation. Easy to AttachMXSA1MIC Height: 150-1460mm Boom Length: 0-690mm MXSA1KEBL1 Max Load: 25Kg Height: 310-410mm Width: 570-820mm Arms Length: 380mm MXSA1KEBL2 Max Load: 10Kg Height: 270mm Width: 570-820mm Arms Length: 300mm MXSA1COS8 Plate Angle: 360 Degrees Rotatable Plate Dimensions: 330 x 240mm Maximum Device Dimensions: 260 x 200 x 20mm Maximum Load: 3Kg Arm Length: 0-390mm Foot Length: 100-800mm. Accessories for the Stagg MXSA1 Keyboard stand. Add these accessories to give yourself a complete keyboard workstation.. keyboard stand-adjustable keyboard stand