I feel like this kit is necessary to get the most out of the Ikki. I wish that Wuque would include it with the Ikki kit along with the silicone to provide more options. To me the silicone sounds more muted but if that's what you are going for then you do not need this. If you want your Ikki to pop and have a little more life then you should definitely get this kit.
helped with the sound of the board i like it
The poron sheet is rather fragile but it arrived undamaged and I love it in my Ikki68