Addition to the sound box ?

This has two elements. You are obviously helpless in a form of pillory with some rope bondage (I much prefer leather cuffs and straps). And as such can be whipped without mercy. The added extra is something I talked about in an earlier post i.e. the box. The idea being that it is a padded, almost soundproof box. You can scream as much as you like but you will be the only one who can hear them. Also psychologically, to the whipper you just become a piece of white meat that is there too be whipped as you really have no identity or any reference to a real person.... just white flesh.