BSS EC-4BV Ethernet Controller with 4 Buttons and Volume Control | Color: BlackThe Soundweb Contrio EC 4BV is an Ethernet wall controller for use in Harman HiQnet systems. The EC 4BV can control and monitor parameters within BSS Audio Soundweb London and other HiQnet devices, including Crown DCi series amplifiers. The EC 4BV contains one push rotary encoder, one encoder ring, four buttons, and one LCD screen. The buttons, encoder ring, and LCD screen are multi color backlit, capable of eight different colors with adjustable