The Lexicon Lambda is a discontinued USB-powered audio interface providing five analog input channels (two XLR mic preamps with phantom power, one 1/4" instrument input, and stereo line inputs) and balanced TRS outputs. It supports 24-bit computer-based recording with two-channel USB audio transfer (2 input/2 output). Featuring RF-filtered inputs, headphone monitoring with dedicated amplifier, and TRS inserts for external processors, it requires no external power supply. The interface includes USB cable, driver software, and documentation for seamless integration into recording systems.