The TEAC AG-15D is a digital audio recorder designed for professionals in various fields, such as music production, broadcasting, podcasting, and field recording. It features high-quality AD/DA converters that deliver up to 24-bit/192 kHz audio resolution, as well as a built-in USB/24-bit/192 kHz interface for direct digital recording to a computer. The recorder offers multiple input and output connectivity options, including XLR and phantom power, line in, AES/EBU, coaxial, and optical digital input, as well as balanced XLR and Line out. The AG-15D also comes with customizable templates, metadata input, and batch renaming functions for efficient and organized post-production workflows. Overall, the TEAC AG-15D is a versatile and reliable digital audio recorder that offers high audio quality, flexible connectivity, and advanced features for professional applications.