it looks really cool but there appears to be no lock-off mechanism and so it is going to be working with an inverse virtual movement-smoothing stability mechanism based on gravity and physics to hold a 10kg screen in place whilst at the same time being fairly easily adjusted.
so this height-adjustable groovy stand would not in fact be appropriate for drum machine activity.
tap away for ten minutes and that height adjustable angle mechanism is going to lower itself by a couple of centimetres.