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1 / 5At 7.3, its noise cancelling beats 16% of over-ear headphones we've measured.
Measured on 64 of the 241 we've cataloged.
A 3.4 puts its audio quality in the bottom quarter of over-ear headphones we've measured.
Measured on 49 of the 241 we've cataloged.
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above average for over-ear headphones — based on 158 of 241 we've cataloged.
Usb-c is the most common — on 89% of the 137 over-ear headphones we've cataloged (of 241).
5.4 appears on 11% of the 151 over-ear headphones we've cataloged (of 241).
below average for over-ear headphones — based on 199 of 241 we've cataloged.
Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.
Belkin SoundForm Isolate Frequency Response (measured on a B&K 5128)
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Measured frequency response (dB relative) against the SoundGuys Headphone Preference Curve. When the measurement goes above the dashed line, that frequency is louder than our preference curve, and when it goes below: it's quieter. Use the curve for comparison purposes only, as your taste may vary.
| Frequency (Hz) | Response (dB) |
|---|---|
| 20 | 0.4 |
| 25 | 0.6 |
| 32 | 0.1 |
| 40 | -0.2 |
| 50 | -0.5 |
| 63 | 0.5 |
| 80 | 0.6 |
| 100 | -2.7 |
| 125 | -5.2 |
| 160 | -6.9 |
| 200 | -5.4 |
| 250 | -4.0 |
| 315 | -4.5 |
| 400 | -2.4 |
| 500 | 2.7 |
| 630 | 3.8 |
| 800 | 5.7 |
| 1000 | 4.7 |
| 1250 | 3.4 |
| 1600 | -0.1 |
| 2000 | 4.5 |
| 2500 | 9.7 |
| 3150 | 9.3 |
| 4000 | 5.3 |
| 5000 | 1.9 |
| 6300 | 10.4 |
| 8000 | 12.2 |
| 10000 | 7.9 |
| 12500 | 1.8 |
| 16000 | -9.2 |
| 20000 | -22.5 |
Belkin SoundForm Isolate Attenuation (measured on a B&K 5128)
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Solid lines: passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Dashed lines: total attenuation (dB) with ANC on — passive isolation plus active noise cancelling. Higher on the chart means more attenuation.
| Frequency (Hz) | Attenuation (dB) |
|---|---|
| 21 | -6.4 |
| 26 | -2.6 |
| 33 | 0.7 |
| 41 | -0.9 |
| 52 | -0.9 |
| 65 | -1.9 |
| 82 | -2.1 |
| 103 | -1.5 |
| 130 | -1.4 |
| 163 | -1.9 |
| 205 | -3.0 |
| 259 | -3.0 |
| 325 | -0.9 |
| 410 | 0.7 |
| 516 | 2.3 |
| 613 | 3.0 |
| 772 | 8.5 |
| 972 | 15.7 |
| 1220 | 23.4 |
| 1540 | 22.8 |
| 1940 | 25.1 |
| 2440 | 33.7 |
| 3070 | 26.8 |
| 3870 | 26.7 |
| 4870 | 33.6 |
| 6130 | 37.1 |
| 7720 | 38.7 |
| 9720 | 38.9 |
| 12200 | 37.2 |
| 15400 | 32.8 |
| 19400 | 30.3 |
| Frequency (Hz) | Total attenuation (dB) |
|---|---|
| 21 | 4.5 |
| 26 | 5.6 |
| 33 | 5.5 |
| 41 | 7.0 |
| 52 | 14.4 |
| 65 | 6.8 |
| 82 | 12.1 |
| 103 | 17.5 |
| 130 | 22.9 |
| 163 | 21.8 |
| 205 | 20.4 |
| 259 | 16.8 |
| 325 | 12.0 |
| 410 | 3.4 |
| 516 | 3.4 |
| 613 | 4.3 |
| 772 | 7.4 |
| 972 | 12.0 |
| 1220 | 18.8 |
| 1540 | 16.1 |
| 1940 | 18.3 |
| 2440 | 29.0 |
| 3070 | 25.2 |
| 3870 | 26.1 |
| 4870 | 34.1 |
| 6130 | 36.2 |
| 7720 | 36.8 |
| 9720 | 35.9 |
| 12200 | 32.4 |
| 15400 | 32.4 |
| 19400 | 30.0 |
Belkin SoundForm Isolate MDAQS
Multi-Dimensional Audio Quality Scores, Scale 1 - 5
Virtual mean opinion scores (MOS) on a 1–5 scale, modeled from the measured response by HEAD acoustics’ MDAQS (Multi-Dimensional Audio Quality Score) model. Higher is better across timbre, distortion, and immersiveness — add other models to see where this one lands.
The verdict
The Belkin SoundForm Isolate delivers decent performance at an impressively low price point. While they won't compete with premium options in sound quality or comfort, they offer functional ANC, great battery life, and plenty of connectivity options. Ideal for budget-conscious buyers or as a first pair of wireless headphones for younger users who might not treat expensive gear gently.
✓Liked: Affordable, Great battery life, Bluetooth Multipoint and both USB-C and 3.5mm wired options, Unique "Isolate Mode" with ocean sounds for relaxation
✕Could be better: Poor sound quality, not enough bass, Uncomfortable for extended listening, Limited earcup rotation
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What readers ask about the Belkin SoundForm Isolate, answered by the people who own it.
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2 of 4 would buy again
4 owners · owners report ~40 h per charge vs 40 h claimed
Expected more from the fit and build
The battery beat their expectations
The noise cancelling beat their expectations
1 of 1 would buy again
1 owner
Nothing surprising about comfort
0 of 1 would buy again
1 owner
The noise cancelling beat their expectations
0 of 1 would buy again
1 owner · 1 photo-verified
Expected more from comfort
0 of 1 would buy again
1 owner
Comfort beat their expectations
1 of 1 would buy again
1 owner · owners report ~55 h per charge vs 53.77 h claimed
The battery beat their expectations
