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 |
B |
Audioengine A1 Wireless digs deeper - 65Hz against 80Hz. |
| Built-in power |
A |
Kanto YU2 has the bigger amplifier (50W vs 30W RMS). |
| Connections |
B |
Audioengine A1 Wireless adds Bluetooth. |
| Size |
depends |
Kanto YU2 is easier to place; Audioengine A1 Wireless is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability |
B |
Audioengine A1 Wireless: a sub output. |
| Price |
B |
Audioengine A1 Wireless is cheaper - $199 against $240, about 17% less. |
A Kanto YU2
B Audioengine A1 Wireless
depends neither is better in the abstract - it turns on your room, placement 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?
Audioengine A1 Wireless is the easier recommendation: it leads on most of the measured areas and costs less. Take Kanto YU2 if its size, looks or fit in your room suit you better. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 80Hz anyway, so judge these on the other rows instead. In a large or open-plan room, Audioengine A1 Wireless has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Kanto YU2 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.