Siblings in Revel's Architectural series, so they share a family sound. It comes down to size, output and price.
| Area | Better | Why |
|---|
| Amplifier needs | B | Revel W363 is more sensitive (88dB vs 86dB), so it goes louder on the same amplifier. |
| Headroom | A | Revel W873 takes more power (150W vs 120W) - more in hand in a big room. |
| Size | depends | Revel W363 is easier to place; Revel W873 is bigger, which usually goes with fuller bass. Your room decides. |
| Price | B | Revel W363 is cheaper - $610 against $900, about 32% less. |
A Revel W873 B Revel W363
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. In a large or open-plan room, Revel W873 has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Revel W363 is the easier speaker to get right. If your amplifier is modest, vintage or valve-based, Revel W363 is the safer partner - the other will want more current or more watts to sound its best.
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.