Dome tweeters, cone woofers, metal ribbons, planar magnetic and electrostatic panels all do the same thing: They vibrate air to make sound. Those technologies have all been around for decades, but the goal of making a perfect-sounding speaker has yet to materialize, so it's pretty easy to tell the difference between a real piano and the sound of a piano reproduced over speakers. Same for drums, acoustic guitars, basses, violins, flutes, horns and voices.
Electric instruments and synthesizers should be easier to reproduce in part because they don't make sound on their own; we always hear them over amplifiers and speakers. Even so, it's next to impossible to make your home hi-fi sound like a big Fender guitar amp. … Read more