Why you can't trust audio measurements

In this video I show various ways in which measurements can be unreliable, changed, misleading, and why you should always take them with a pinch of salt.
Quite a long one but hopefully will be interesting!

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0:00 - Intro
1:56 - Disclaimers
3:08 - Measurements are not exact
4:32 - Measurements can be altered by test configuration
7:21 - Unweighted vs A-Weighted
8:22 - ADC/Analyzer distortion adds to the result
9:30 - Amps must be fed a clean signal to test properly
10:42 - How do you know how the analyzer was configured?
11:40 - Amps: Loads
13:01 - Amps: Measuring at unrealistic levels
13:31 - Amps: Volume control makes a big difference
15:06 - DACs: Standard 4v outputs vs 'Hot' outputs
16:04 - DACs: Noise from PC
17:29 - DACs: Internal settings
18:45 - DACs: Jitter from digital source
19:35 - DACs: Sample rate affects performance
20:31 - Manufacturers: SINAD doesn't tell the whole story
21:30 - Manufacturers: How they optimise for test conditions
23:44 - Why focusing on SINAD can be a problem
27:29 - High SINAD does not mean 'transparent'
27:45 - Outro

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