E1DA Cosmos ADC DM

Cosmos ADC DM is purpose-built as a measurement-grade Analog-to-PCM Digital Converter for audio engineers, DIY enthusiasts, technology reviewers, and audio measurement applications. Its ultra-low-noise architecture and carefully selected components provide the measurement performance required for evaluating DACs, amplifiers, and other audio equipment with high precision. At the heart of Cosmos ADC DM are two ES9822Pro ADC chips supported by a precision analog front end using OPA1612 and RT6863S operational amplifiers. High-quality components from Susumu, Viking, Murata, and Samsung are used throughout the circuit to maintain signal integrity and minimize unwanted noise and distortion during conversion. At 1kHz, -0.5dBFS, 48kHz sampling rate, and 20Hz–20kHz bandwidth, Cosmos ADC DM achieves typical THD+N of -125dB for Grade-B units, -126dB for Grade-A units, and -127dB for Grade-0 units. All harmonics are typically below -140dB, providing an exceptionally clean measurement platform for high-performance audio equipment.