That's true for a dbP, but not for a dbV. Most of the specs that Amir measures here are voltage, where every 10x change is 20 dB.
For example, if someone says SINAD is 100 dB, that's 10^5 or 100,000:1, or 0.001%.
It's not 10^10, or 0.00000001%.
This is another common confusion about dB: when to...