Different kinds of product: one is active with its amplifier built in, the other passive and needs one. Judge them on how you want to own the system, not just the specs.
| Area | Better | Why |
|---|
| Bass | A | Dynaudio Focus 30 digs deeper - 30Hz against 38Hz. A subwoofer would even that out. |
| What you buy | depends | Dynaudio Focus 30 is a complete system - just add a source. Sonus Sonetto V also needs an amplifier: more money and another box, but you choose it. |
| Connections | depends | Dynaudio Focus 30 has Bluetooth, Wi-Fi and streaming built in. With Sonus Sonetto V that all comes from the amplifier you pair it with. |
| Upgrade path | depends | Sonus Sonetto V can be re-amped later and outlive several amplifiers; Dynaudio Focus 30 ages as one unit. |
| Size | depends | Dynaudio Focus 30 is easier to place; Sonus Sonetto V is bigger, which usually goes with fuller bass. Your room decides. |
| Cabinet | depends | Sealed vs Ported. Sealed is tighter and happier near a wall; ported digs lower but wants space behind it. |
| Expandability | depends | Dynaudio Focus 30: a sub output; Sonus Sonetto V: bi-amping. Sonus Sonetto V sits in a wider range (11 models), so a matched surround system is easier later. |
| Price | B | Sonus Sonetto V is cheaper - $4,499 against $8,250, about 45% less; arguably a different class. Speakers only - an amplifier narrows that gap. |
A Dynaudio Focus 30 B Sonus Sonetto V
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
Dynaudio Focus 30 suits you if you want one box, ready to play, with nothing else to buy. Sonus Sonetto V suits you if you already have an amplifier, want to choose the electronics, or expect to upgrade in stages. Neither is the better speaker in the abstract. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 38Hz anyway, which makes the cheaper Sonus Sonetto V much easier to justify. In a large or open-plan room, Sonus Sonetto V has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Dynaudio Focus 30 is the easier speaker to get right.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.