Hydrogenaudio is an online community of audio enthusiasts, including some software developers.

[1] It is known for its blind listening tests[2][3] and scientific mindset.

[4][5] It has a website with forums featuring discussions about all kinds of audio reproduction issues.

There is also a wiki with articles about codecs and other aspects of audio technology.

[6] The website was launched in 2001 and reported 112,875 registered user accounts in April 2019.