JBL: what they publish

In this database2 headphones

Figures from their own material2 of 2

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This page does not review anything JBL 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.

Headphones

Where each sensitivity figure came from

Model	Impedance	Sensitivity	Source of the figure
Quantum One	32 Ω	95.0 dB/mW	Published per mW
Tour One M2	32 Ω	117.0 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.

Published per mW — 2: the maker prints a decibel figure per milliwatt, which is what the database stores

All 156 manufacturers · What the spec sheets actually say · Download the whole database

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