Shoutmon + Supersonic Sparrow is an Enhancement Digimon. It is Sparrowmon's "Machspeed-cruiser Mode" (音速巡航形態 Onsokujunkou Keitai?) that acquired even more speed. It possesses tremendous thrust and is able to carry Shoutmon on its back while flying, but if Shoutmon doesn't have a lot of will-power, it will be immediately blown off by the excess wind speed. There is an instrument called a DigiCompressor within its body, which produces thrust by taking in air, super-compressing it, then exhausting it out its aft. This instrument can be used not only for flight but also for offensive techniques.