I love design concepts that are cool. We see concept speakers every now and again and of all of the concepts I have seen in the speaker category the Vol Speaker is the coolest. I love the idea of a speaker that looks like a giant volume knob. It looks like the designer ripped the knob off my home theater receiver, sprinkled it with Miracle Grow, and crammed speaker parts inside. The designer of the concept is Hironao Tsuboi.