Siblings in Audioengine's A series, so they share a family sound. It comes down to size, output and price.
| Area | Better | Why |
|---|
| Bass | evenly matched | Much the same reach (65Hz vs 65Hz). |
| Built-in power | evenly matched | Similar onboard amplification (30W vs 30W RMS). |
| Connections | evenly matched | The same set of inputs and streaming options. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Expandability | depends | Audioengine A1 Wireless: a sub output; Audioengine A2+ Wireless: a sub output. |
| Price | A | Audioengine A1 Wireless is cheaper - $199 against $269, about 26% less. |
A Audioengine A1 Wireless B Audioengine A2+ Wireless
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?
Neither runs away with it - they trade advantages. Let the "depends" rows and your own room settle it. Think about the whole system, not just the speakers: the roughly $70 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.