Controls are very well thought out with the suppled switches having a nice, solid engagement. The sampling functions are fantastic. I love these garage hooks. However, it did well enough across metrics to clinch the top spot. La plastica è decisamente robusta, anche se sottoposta a pressione non emette scricchiolii. They dont shed like most of the other slippers that Ive bought. I purchased this as a Birthday gift for a friends daughter. They have a pitched low frequency and an pitched high frequency. -If I am doing an exercise that requires lying down then there seems to be a change in sound quality. These slippers are super soft and warm, but I was a little underwhelmed.