Team Associated Ess-Air Engine Sound System, With this kit you are now able to add exciting sounds to your favorite RC Plane. This kit is light weight, compact size is easy to install. Output is circuit, overload and thermally protected. Supports firmware updates and function upgrades. Uses advanced DNS/DCR algorithms to reproduce real engine sounds. Has AUX channel that can simulate a variety of sounds such as gunshots. Supports two sets of engine sounds.
SPECIFICATIONS:

Supply Voltage range 5V-26V, speaker impeadance 4 ohms, AMP power output 15watts/12v(under 4 ohms), 2 audio channels,