This is a slow motion video at 240 FPS to demonstrate the FiiO M11 Plus ESS 300ms audio latency in USB DAC mode. On the monitor you can see a video clip that plays a short sound at the mark "0". The cursor indicates the time interval from the position "0" (-500ms, -400ms, -300ms, -200ms, -100ms, 0ms, +100ms, +200ms, +300ms, +400ms, +500ms). During the first half of the recorded video the sound is reproduced using FiiO M11 Plus ESS in USB DAC mode. The sound is played at the mark "0", however we can hear it only when the cursor reaches 300ms mark (remember this is a slow motion video, real action is 8x faster). The second half of the recorded video demonstrates that the laptop internal speakers reproduce the sound at the mark "0" with no latency.