This page does not review anything Verum Audio makes. It counts one thing: how much of what this database says about their products came out of their own documents, and how much had to be worked out or left blank.
| Model | Impedance | Sensitivity | Source of the figure |
|---|---|---|---|
| Verum 1 | 8 Ω | 107.0 dB/mW | Published per mW |
| Verum 2 | 8 Ω | 96.0 dB/mW | Published per mW |
Impedance is almost always printed. Sensitivity is the one that goes wrong, because a decibel figure means two very different things depending on whether it is per milliwatt or per volt — about five decibels apart at 300 Ω and eighteen at 16 Ω. The conversion is here.
Verum Audio prints no frequency range for any of both models here whose sheets have been read.
No measurement is published here — only what was printed. The whole count, maker by maker, is in the frequency response audit.
The hardest of the 2 to drive is the Verum Audio Verum 2: 2.5 mW and 0.14 V for a 100 dB SPL peak. Their impedances run from 8 to 8 Ω, which matters because the voltage a headphone wants rises with impedance while the power falls.
280 of the 280 sources here reach 100 dB on all 2, and the cheapest of them is the Apple USB-C dongle (EU) at $9. “Reaches” means the maker’s own published power figure is enough at that load; it is not a judgement of how it sounds.
Their lowest impedance is the Verum Audio Verum 1 at 8 Ω, so a source wants an output impedance at or below 1.0 Ω to satisfy the one-eighth rule on everything they make. 122 of the 169 sources that publish an output impedance manage that.
These counts use figures the source makers published themselves. A product that publishes nothing is not counted as a pass anywhere above, which is why the three numbers differ so much. The collection matcher runs the same arithmetic over whatever you actually own.