No single best speaker here - they are built to different priorities, and the right one depends on your room, your sources and what you listen to.
| Area | Better | Why |
|---|
| Bass | A | Buchardt A500 digs deeper - 25Hz against 39Hz. |
| Built-in power | A | Buchardt A500 has the bigger amplifier (450W vs 300W RMS). |
| Connections | B | Buchardt A500 adds Wi-Fi; Dynaudio Focus 20 XD adds Bluetooth and digital inputs. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Cabinet | depends | Sealed vs Ported. Sealed is tighter and happier near a wall; ported digs lower but wants space behind it. |
| Price | A | Buchardt A500 is cheaper - $3,850 against $6,000, about 36% less. |
A Buchardt A500 B Dynaudio Focus 20 XD
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?
Buchardt A500 has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 39Hz anyway, so judge these on the other rows instead. Think about the whole system, not just the speakers: the roughly $2,150 saved by taking the cheaper pair would buy a subwoofer or a better amplifier, and either usually does more for the sound than the difference between these two.
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.