A generation apart: Buchardt A10 is the newer design, against a 2016 model. Newer is not automatically better, but the older one is more likely to be discounted or near run-out.
| Area | Better | Why |
|---|
| Bass | A | Buchardt A10 digs deeper - 28Hz against 39Hz. |
| Built-in power | B | Dynaudio Focus 20 XD has the bigger amplifier (300W vs 200W RMS). |
| Connections | B | Buchardt A10 adds Wi-Fi; Dynaudio Focus 20 XD adds Bluetooth and digital inputs. |
| Size | depends | Buchardt A10 is easier to place; Dynaudio Focus 20 XD 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. |
| Price | A | Buchardt A10 is cheaper - $3,950 against $6,000, about 34% less. |
A Buchardt A10 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?
Dynaudio Focus 20 XD is ahead, but only on 1 of the measured areas, and it costs about 52% more. That is a lot of money for a narrow margin on paper - Buchardt A10 looks like the sensible buy unless something else about the Dynaudio Focus 20 XD appeals to you. 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 $2,050 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.