The AI-1 is an 8-channel analog input module that can be installed in an Electro-Voice N8000 system. It features balanced inputs, 24-bit A/D conversion, and a dynamic range of 117dB. The module processes audio signals with 48-bit word length and provides additional analog inputs to the system with sampling at 48kHz and a delay of 1.375ms. It is installed by removing the rear panel blind, inserting the module, and securing it with screws.