These sit in different price classes - PSB Alpha iQ costs roughly 1.7x what SVS Prime Wireless Pro does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.
| Area | Better | Why |
|---|
| Bass | B | SVS Prime Wireless Pro digs deeper - 42Hz against 64Hz. |
| Built-in power | evenly matched | Similar onboard amplification (180W vs 200W RMS). |
| Connections | depends | PSB Alpha iQ adds phono; SVS Prime Wireless Pro adds Wi-Fi. |
| Size | depends | PSB Alpha iQ is easier to place; SVS Prime Wireless Pro is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | depends | PSB Alpha iQ: a sub output; SVS Prime Wireless Pro: a sub output. |
| Price | B | SVS Prime Wireless Pro is cheaper - $899 against $1,499, about 40% less; arguably a different class. |
A PSB Alpha iQ B SVS Prime Wireless Pro
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?
SVS Prime Wireless Pro 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 64Hz anyway, so judge these on the other rows instead. In a large or open-plan room, SVS Prime Wireless Pro has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, PSB Alpha iQ 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.