The HEOS 1 produces amazingly big sound from a compact, portable speaker. Enjoy streaming music from the cloud or local files using the intuitive HEOS app for iOS, Android, and Kindle. The compact enclosure houses custom dual drivers including a wide range mid-woofer and precision dome tweeter. The HEOS 1 enclosure is sealed for humidity resistance, making it ideal for use in a humid environment, such as a bathroom. The HEOS 1 features advanced DSP (Digital Signal Processing) to deliver full-range sound, with custom EQ sound tailoring that helps deliver a smooth, natural tonal balance, along with dual channel Class D digital audio amplification.