The Saramonic SR-AX107 is a 2-channel XLR audio adapter with preamplifiers and phantom power, designed for DSLR cameras with a built-in microphone jack. It allows for connection of various audio devices such as condenser microphones, wireless microphones, and external audio mixers. The adapter makes recording easier with features like level metering, headphone monitoring, and AGC disable for reduced noise. It also offers switchable phantom power and balanced XLR inputs. The compact and lightweight design of the SR-AX107 makes it a convenient tool for improving audio quality in camera recordings.