

All products featured are independently chosen by us. However, SoundGuys may receive a commission on orders placed through its retail links. See our ethics statement.
1 / 7The JBL Live 660NC is a straightforward pair of ANC headphones. It's not terribly exciting, but it's plenty reliable.
At 6, its noise isolation / ANC beats 49% of over-ear headphones we've measured.
Measured on 86 of the 240 we've cataloged.
above average for over-ear headphones — based on 150 of 240 we've cataloged.
5 appears on 20% of the 145 over-ear headphones we've cataloged (of 240).
below average for over-ear headphones — based on 195 of 240 we've cataloged.
The JBL Live 660NC is a reliable, if a little lacklustre pair of noise canceling headphones. There's not a lot flash here, but the fundamentals are mostly handled well. Just don't expect the microphone to be your next remote-work lifeline.
Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.
Measured frequency response (dB) against the SoundGuys house target — the dashed curve. The closer the measured line tracks the target, the more neutral the tuning; peaks ride above the target, dips fall below it.
| Frequency (Hz) | Response (dB) |
|---|---|
| 20 | 12.3 |
| 25 | 11.1 |
| 32 | 9.2 |
| 40 | 7.5 |
| 50 | 6.5 |
| 63 | 5.5 |
| 80 | 3.9 |
| 100 | 2.1 |
| 125 | -0.3 |
| 160 | -4.7 |
| 200 | -4.0 |
| 250 | -2.2 |
| 315 | -1.7 |
| 400 | -1.4 |
| 500 | -1.1 |
| 630 | -1.4 |
| 800 | -0.8 |
| 1000 | -0.1 |
| 1250 | -1.0 |
| 1600 | 1.3 |
| 2000 | 2.8 |
| 2500 | 4.5 |
| 3150 | 6.2 |
| 4000 | 7.5 |
| 5000 | 2.8 |
| 6300 | 10.9 |
| 8000 | 5.8 |
| 10000 | -1.8 |
| 12500 | -4.3 |
| 16000 | -9.6 |
| 20000 | -21.2 |
Passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.
| Frequency (Hz) | Attenuation (dB) |
|---|---|
| 21 | -0.2 |
| 26 | 0.7 |
| 33 | 1.0 |
| 41 | 0.6 |
| 52 | 0.8 |
| 65 | 0.8 |
| 82 | -0.7 |
| 103 | 1.0 |
| 130 | -2.7 |
| 163 | 1.7 |
| 205 | 0.9 |
| 259 | 4.5 |
| 325 | 8.9 |
| 410 | 10.2 |
| 516 | 11.8 |
| 613 | 14.4 |
| 772 | 15.0 |
| 972 | 19.3 |
| 1220 | 22.5 |
| 1540 | 24.3 |
| 1940 | 27.4 |
| 2440 | 37.0 |
| 3070 | 39.8 |
| 3870 | 30.1 |
| 4870 | 30.3 |
| 6130 | 34.1 |
| 7720 | 40.0 |
| 9720 | 31.9 |
| 12200 | 24.3 |
| 15400 | 31.6 |
| 19400 | 37.4 |
Total attenuation (dB) with ANC on — passive isolation plus active noise cancelling. Higher on the chart means more attenuation.
| Frequency (Hz) | Total attenuation (dB) |
|---|---|
| 21 | -1.5 |
| 26 | 5.4 |
| 33 | 8.6 |
| 41 | 13.3 |
| 52 | 16.3 |
| 65 | 16.9 |
| 82 | 16.9 |
| 103 | 22.4 |
| 130 | 11.9 |
| 163 | 15.1 |
| 205 | 17.5 |
| 259 | 23.0 |
| 325 | 29.5 |
| 410 | 30.1 |
| 516 | 22.6 |
| 613 | 21.4 |
| 772 | 20.1 |
| 972 | 27.0 |
| 1220 | 27.0 |
| 1540 | 23.6 |
| 1940 | 28.4 |
| 2440 | 41.2 |
| 3070 | 44.0 |
| 3870 | 29.8 |
| 4870 | 28.9 |
| 6130 | 36.3 |
| 7720 | 38.3 |
| 9720 | 33.6 |
| 12200 | 24.6 |
| 15400 | 35.0 |
| 19400 | 43.4 |
Commentary and deep dives from the SoundGuys editorial team.











