This page does not review anything OLLO 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 |
|---|---|---|---|
| S5X | 50 Ω | 95.2 dB/mW | Converted from a stated voltage |
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.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| S5X | 15 Hz - 22 kHz sweep 1/3 oct p-p range (+/-1) 14.5 dBSPL | 14.5 dB peak-to-peak | not printed |
| 20 Hz - 20 kHz sweep 1/3 oct p-p range (+/-1) 12 dBSPL | 12 dB peak-to-peak | not printed |
OLLO Audio prints a frequency range for the one model here whose sheet has been read.
Every one of those ranges carries a tolerance in decibels. That is rare enough to be the most useful sentence on this page: across the whole database only 58 of the 490 models with a printed range have one.
Every range stands under the same heading: “Frequency range”.
No measurement is published here — only what was printed. The whole count, maker by maker, is in the frequency response audit.
The OLLO Audio S5X needs 3.0 mW and 0.39 V for a 100 dB SPL peak at 50 Ω.
280 of the 280 sources here reach 100 dB on it, 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 OLLO Audio S5X at 50 Ω, so a source wants an output impedance at or below 6.2 Ω to satisfy the one-eighth rule on everything they make. 135 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.