The product itself has been used a few times, but it's easy to use and produces a beautiful sound. The ZOOM U-22 is a 2-in/2-out portable audio interface with high-quality recording capabilities in a compact body. It can be connected to a computer, iPhone, or iPad, allowing for easy recording and music production anywhere. Equipped with a low-noise, high-performance microphone preamplifier, it can clearly capture vocals, guitars, and other sounds. It supports high-resolution recording up to 24bit/96kHz, achieving studio-quality sound. The input terminals feature an XLR/TRS combo jack, and are equipped with 48V phantom power for condenser microphones and Hi-Z input for guitars and basses. Furthermore, the direct monitoring function provides a comfortable recording environment without delay. The lightweight design supports USB bus power and battery operation, making it convenient to carry. It's a practical device that supports a wide range of applications, from live performances to home recording and streaming.