There is another small hole slightly larger on the back of the tile that is the speaker port. The pulley and cable would also get extremely hot after a few sets, from the friction I gather? Hot enough to seriously burn your hand, if touched. It would be great to be able to connect this to a console, pc or tablet rather than having to buy yet another controller. The hooks are great. Die Sprachqualität beim Telefonieren ist sehr gut. Its great to have both bikes in my garage and out of the way. Head phones are mostly comfortable, just the right amount of clamping pressure. No other complaints. I bought these to wear on my upcoming trip to Punta Cana. The carrier itself is made from heavy steel and the components feel very solid.