Different price classes - Advance Paris Playstream A7 costs roughly 1.9x what Advance Paris X-i75 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 | A | Advance Paris Playstream A7 has more power - 115W against 75W 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 (180W and 110W). |
| Noise floor | A | Advance Paris Playstream A7 is the quieter design on paper - 98dB against 90dB. Audible mainly with sensitive speakers in a quiet room. |
| Built-in DAC | evenly matched | Both have a DAC on board with much the same capability. |
| Amplifier class | depends | Advance Paris Playstream A7 is Class A/B and Advance Paris X-i75 is Class AB-T. Class A/B runs warm and is the long-established mainstream choice. Modern examples of both measure well - judge by the rest of the page. |
| Price | B | Advance Paris X-i75 costs less - $1,299 against $2,499 at list. |
| Watts per dollar | B | Advance Paris X-i75 is the cheaper watt - about $17 per watt against $22. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Advance Paris Playstream A7 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?
Advance Paris Playstream A7 is ahead, but on only 1 of the measured areas, and it costs about 92% more. That is a lot of money for a narrow margin - Advance Paris X-i75 is the sensible buy unless a specific feature above decides it for you. Think about the whole system: the roughly $1,200 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.