FLAC (Free Lossless Audio Codec) is an audio coding format for lossless compression of digital audio, developed by the Xiph.Org Foundation

SHM-CD (Super High Material CD) is a superior quality CD fully compatible with all CD players. SHM-CD utilizes a polycarbonate material orig

Direct Stream Digital (DSD) is a trademark used by Sony and Philips for their system for digitally encoding audio signals for the SACD

Audio File Formats

Pulse Code Modulation(PCM) is a digital modulation technique where the analog signal is coded into digital pulses.

I have found interesting (IMHO) Music Service Musifée

MQA - HOW DOES THAT WORK?