5.1 Surround Test [portable] < 90% FAST >

: While many videos claim to be "5.1 Surround Tests," be cautious. Many TV and console apps for YouTube only support Stereo (2.0) and will downmix or simulate the surround channels, leading to "bleeding" where sound intended for the rear speakers also comes out of the front.

Verifies that the audio intended for the "Surround Left" speaker isn't accidentally playing out of the "Front Left". 5.1 surround test

: While many videos claim to be "5.1 Surround Tests," be cautious. Many TV and console apps for YouTube only support Stereo (2.0) and will downmix or simulate the surround channels, leading to "bleeding" where sound intended for the rear speakers also comes out of the front.

Verifies that the audio intended for the "Surround Left" speaker isn't accidentally playing out of the "Front Left".