Audio output lower than expected

[darrenu]

With audio context volume set to 1.0, the output of audio tracks are lower (in dB) than expected.

Using Audacity to play the same track file and measuring with a Class 2 sound level meter, the output through webMushra is ~5dB lower than when using Audacity or any other playback software.

Is this expected, or is there a setting in webMUSHRA that I missed?

Using Windows 10 laptop on both Chrome and Edge provides similar results. All system volumes are set to 100%.