Studio-quality speakers AirPulse A200 are designed by Phil Jones. Airpulse A200 is composed of 25mm MDF, 36mm professional-grade sound absorption material, ribbon tweeter, aluminum mid-woofer and built-in amp and receiver. Sound absorption material is applied to reduce unwanted coloration in sound. The horn-loaded ribbon tweeter features phase correction to improve upon frequency response. The ribbon tweeter has a low resistance of 0.2 ohms, ensuring a wide range of frequency responses. The A200 active bookshelf speakers have a 5.5-inch aluminum alloy cone mid-range woofer unit.