Siblings in Cambridge Audio's AXA range, so they share a design and a house sound. It comes down to power, features and price.
| Area | Better | Why |
|---|
| Power | B | Cambridge Audio AXA35 has more power - 35W against 25W into 8 ohms. That is about 1.5dB, which is a small step in loudness but real headroom on peaks. |
| Noise floor | evenly matched | Much the same signal-to-noise ratio (82dB vs 82dB). |
| Analogue inputs | evenly matched | The same number of line-level inputs (5). |
| Phono stage | depends | Cambridge Audio AXA35 has a built-in phono stage (MM,MC) and Cambridge Audio AXA25 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. |
| Headphones | depends | Only Cambridge Audio AXA35 has a headphone output. Worth something if you listen late, nothing if you never do. |
| Price | A | Cambridge Audio AXA25 costs less - $299 against $399 at list. |
A Cambridge Audio AXA25 B Cambridge Audio AXA35
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?
Cambridge Audio AXA35 is ahead, but on only 1 of the measured areas, and it costs about 33% more. That is a lot of money for a narrow margin - Cambridge Audio AXA25 is the sensible buy unless a specific feature above decides it for you. If you play records, Cambridge Audio AXA35 saves you buying a phono stage; if you do not, ignore that row entirely. Think about the whole system: the roughly $100 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.