s-JAYS is one of the first in-ear earphones in the world to use the SIREN armature technology. Combined with a new customized sound tube design which opens up the soundstage, these new armatures deliver a roaring sound featuring JAYS most powerful bass system so far. Matched with colorful mids and highs, these earphones will give you a completely new listening experience.The SIREN technology is a tubeless, round balanced armature which can deliver a greater output than many other armatures yet providing a good dynamic range.JAYS Sound Isolating System reduces the background noise of modern life. With this silent setting you can experience an amazing sound even at low volumes.s-JAYS cord can be adjusted both in length and with different input connectors. s-JAYS comes standard with a 0.6m (~24inch) long cable and a 0.9m (35inch) extension cord, both with a straight 3.5mm (1.8 in) Mini-Plug Stereo connector. In addition to this there is also a cable with an L-shaped 3.5mm (1.8 in) Mini-Plug Stereo connector available for purchase as an accessory.