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DALI IO-12 and Marshall Monitor III are closely matched headphones devices with nearly identical overall scores (65 vs 67). The best choice depends on which specific features matter most to you.
Scores are relative within the headphonescategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
| Spec | DALI IO-12 | Marshall Monitor III |
|---|---|---|
| Driver Size | 50mm✓ | 40mm |
| ANC | true | false |
| Transparency Mode | true | false |
| Voice Assistant | Google, Alexa | Google, Alexa |
| Battery Life | 30hrs | 30hrs |
| Bluetooth | 5.0 | 5.0 |
| Codecs | AAC, SBC, aptX | AAC, SBC |
| Multipoint | true | false |
| Foldable | true | true |
| Weight | 320g | 300g✓ |
| Colors | Black | Black |
| Price | 399$ | 249$✓ |
Buy DALI IO-12 if…
The DALI IO-12 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Buy Marshall Monitor III if…
Choose the Marshall Monitor III if budget is your top priority — it offers competitive specs at a lower price point.
DALI IO-12 and Marshall Monitor III are closely matched headphones devices with nearly identical overall scores (65 vs 67). The best choice depends on which specific features matter most to you.
Both products score similarly — it depends on your priorities.
Marshall Monitor III is cheaper at $249 vs $399 for the DALI IO-12.
The DALI IO-12 is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Choose the Marshall Monitor III if budget is your top priority — it offers competitive specs at a lower price point.
Both offer 30 hours of battery life.
Marshall Monitor III is lighter at 300g vs 320g.
Reviewed by VersusMatrix Editorial Team
Last updated: April 25, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.
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