One is a streaming all-in-one and the other is an amplifier. Judge them on how many boxes you want and what you already own, not on the spec sheet alone.
| Area | Better | Why |
|---|
| Power | B | Advance Paris X-i75 has more power - 75W against 55W into 8 ohms. That is about 1.3dB, which is a small step in loudness but real headroom on peaks. |
| Grip on hard loads | A | Yamaha WXA-70A holds up better into a 4-ohm load: its output nearly doubles to 105W, where the other increases modestly. That matters with demanding speakers far more than the 8-ohm figure does. |
| Built-in DAC | A | Both decode on board, but only Yamaha WXA-70A handles DSD. |
| Streaming | A | Only Yamaha WXA-70A has AirPlay 2, Chromecast and Roon. |
| Phono stage | depends | Advance Paris X-i75 has a built-in phono stage and Yamaha WXA-70A does not. Decisive if you own a turntable, completely irrelevant if you do not - and an outboard phono stage is easy to add later either way. |
| Room to grow | evenly matched | The same expansion options on both. |
| Room correction | A | Yamaha WXA-70A has room correction. In an awkward room that does more for the sound than any other difference on this page. |
| Headphones | depends | Only Advance Paris X-i75 has a headphone output. Worth something if you listen late, nothing if you never do. |
| Shelf space | depends | Yamaha WXA-70A takes up about 61% less shelf area (587cm² against 1494cm²), and it is 79mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | evenly matched | Priced within a few per cent of each other. |
| Watts per dollar | B | Advance Paris X-i75 is the cheaper watt - about $17 per watt against $24. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Yamaha WXA-70A B Advance Paris X-i75
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 amplifiers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
Yamaha WXA-70A has the edge on paper, though not by much. The rows marked "depends" are more likely to decide this than the score is. If your speakers are a difficult load - 4 ohms nominal, big woofers, or a sensitivity in the low 80s - Yamaha WXA-70A is the safer partner, because how an amplifier behaves when the impedance drops matters more than its 8-ohm rating. If you play records, Advance Paris X-i75 saves you buying a phono stage; if you do not, ignore that row entirely.
What a spec sheet cannot show: how either sounds with your speakers, how the controls feel day to day, and what the app is like to live with - which is where most all-in-one amplifiers are actually won or lost. Power figures are the manufacturers' own and are not measured to a common standard, so treat small differences as noise. If you can hear both, that will tell you more than any row above.