Lii Audio never stops experiments with all kinds of materials and structures to find the best way to make use of their advantages while avoiding the shortcomings. Metal cone produces good bass however it often lacks the warm feeling, thus we do a lot of experiments to get through the obstacle and the first satisfactory outcome is this Raindrop-3. With a 3 inch metal cone unit it produces amazingly full and warm sound for a 3 inch, also the sound is adjusted physically to be well balanced into a great harmony to listener. At a close bookshelf speaker range it brings a good sound stage. As our level of English is limited we leave you to discover the sound of these speakers. By the way, when this speaker finally comes out, each of Lii Audio team members takes a pair on our PC desk and enjoy it quite much.