The Polk Ultramarine Complete DSP Sound System from ASA Electronics uses a processor to constantly adjust the music to compensate for ambient noise from wind, water and boat engines. The processor ensures that every song sounds the way it was intended. The customizable system includes the brand-new Polk UM2 stereo, and a selection of Polk speakers and subwoofers. It allows for independent volume control in up to four unique zones. asaelectronics.com
This article originally appeared in the December 2018 issue.