The Bose® 4-channel MIC/line input card II for card-frame ControlSpace® engineered sound processors provides four high-quality analog input channels, accommodating a wide range of signals from both line-level devices and microphones using software-selectable gain control up to 64dB and switchable +48VDC phantom power. It is suitable for performing arts venues, hotels and conferencing facilities, religious and worship facilities, health clubs, retail and shopping centers, sports venues, schools and universities.