Different price classes - Advance Paris NOVA A-i190 costs roughly 2.3x what Advance Paris A10 APEX does. Expect it to lead on paper; the question is whether you will hear the difference through the speakers you own.
| Area | Better | Why |
|---|
| Power | B | Advance Paris NOVA A-i190 has more power - 185W against 120W into 8 ohms. That is about 1.9dB, which is a small step in loudness but real headroom on peaks. |
| Grip on hard loads | evenly matched | Both behave much the same into 4 ohms - output increases strongly (183W and 276W). |
| Noise floor | evenly matched | Much the same signal-to-noise ratio (106dB vs 105dB). |
| Built-in DAC | A | Advance Paris A10 APEX has a DAC on board; the other needs an external one, which is another box, another power lead and another purchase. |
| Room to grow | evenly matched | The same expansion options on both. |
| Room correction | B | Advance Paris NOVA A-i190 has room correction. In an awkward room that does more for the sound than any other difference on this page. |
| Shelf space | depends | Advance Paris A10 APEX takes up about 19% less shelf area (1762cm² against 2165cm²), and it is 95mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | A | Advance Paris A10 APEX costs less - $3,499 against $7,999 at list. |
| Watts per dollar | A | Advance Paris A10 APEX is the cheaper watt - about $29 per watt against $43. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Advance Paris A10 APEX B Advance Paris NOVA A-i190
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?
Neither runs away with it - they trade advantages. Let the "depends" rows and the speakers you already own settle it. If you already own a DAC or a streamer, the built-in one is money you are paying twice for, and Advance Paris NOVA A-i190 becomes the more rational buy. Think about the whole system: the roughly $4,500 saved by taking the cheaper one would buy better speakers or a subwoofer, which does more for the sound than the difference between two competent amplifiers.
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.