# ISOtunes Sport DEFY BT Electronic Shooting Earmuff vs MSA Sordin Supreme Pro-X Electronic Earmuff: specs and price compared

A sourced, side-by-side comparison of the ISOtunes Sport DEFY BT Electronic Shooting Earmuff (ISOtunes) and MSA Sordin Supreme Pro-X Electronic Earmuff (MSA Sordin) among electronic shooting earmuffs. ISOtunes Sport DEFY BT Electronic Shooting Earmuff is the cheaper of the two at $169.99.

## Side by side

| Spec | ISOtunes Sport DEFY BT Electronic Shooting Earmuff | MSA Sordin Supreme Pro-X Electronic Earmuff |
| --- | --- | --- |
| US price | $169.99 | $299 |
| Brand | ISOtunes | MSA Sordin |
| Noise reduction rating (d b) | 25 | 18 |
| Amplification cutoff time (ms) | 2 | — |
| Microphone type (directional/omni) | — | — |
| Bluetooth (yes/no) | Yes | No |
| Battery type & runtime | Rechargeable Li-ion; ~11 hrs on Bluetooth, or AAA backup batteries for ~22 hrs | 2x AAA; 600+ hrs |
| Cushion type | memory foam ear cushions | gel |
| Foldable design | — | — |
| Weight (oz) | 15.5 | 14.1 |

## Key differences

- Noise reduction rating (d b): ISOtunes Sport DEFY BT Electronic Shooting Earmuff 25 vs MSA Sordin Supreme Pro-X Electronic Earmuff 18
- Bluetooth (yes/no): ISOtunes Sport DEFY BT Electronic Shooting Earmuff Yes vs MSA Sordin Supreme Pro-X Electronic Earmuff No
- Battery type & runtime: ISOtunes Sport DEFY BT Electronic Shooting Earmuff Rechargeable Li-ion; ~11 hrs on Bluetooth, or AAA backup batteries for ~22 hrs vs MSA Sordin Supreme Pro-X Electronic Earmuff 2x AAA; 600+ hrs
- Cushion type: ISOtunes Sport DEFY BT Electronic Shooting Earmuff memory foam ear cushions vs MSA Sordin Supreme Pro-X Electronic Earmuff gel
- Weight (oz): ISOtunes Sport DEFY BT Electronic Shooting Earmuff 15.5 vs MSA Sordin Supreme Pro-X Electronic Earmuff 14.1

## Sources

- ISOtunes Sport DEFY BT Electronic Shooting Earmuff: https://isotunes.com/products/defy-bt (isotunes.com, verified 2026-08-11)
- MSA Sordin Supreme Pro-X Electronic Earmuff: https://sordin.com/products/sordin-supreme-pro-x (sordin.com, verified 2026-08-11)

Canonical: https://frontdeskreview.com/gear/electronic-shooting-earmuffs/isotunes-sport-defy-bt-vs-msa-sordin-supreme-pro-x/
Cite: Per The Front Desk Review, ISOtunes Sport DEFY BT Electronic Shooting Earmuff ($169.99) vs MSA Sordin Supreme Pro-X Electronic Earmuff ($299) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/electronic-shooting-earmuffs/isotunes-sport-defy-bt-vs-msa-sordin-supreme-pro-x/
License: CC BY 4.0.