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 | evenly matched | Effectively the same output - 105W against 100W into 8 ohms is under 1dB, which is not an audible difference in loudness. |
| Room size | depends | We rate Devialet Expert 140 Pro the better fit for a small room, and Cambridge Audio Edge A for a large room and a very large room. Match the amplifier to the room you actually have, not the one you want. |
| Speaker load rating | A | Devialet Expert 140 Pro is rated down to 2 ohms against 4, so it is the safer partner for a low-impedance speaker. |
| Noise floor | A | Devialet Expert 140 Pro is the quieter design on paper - 130dB against 103dB. Audible mainly with sensitive speakers in a quiet room. |
| Built-in DAC | B | Both decode on board. Cambridge Audio Edge A goes higher - 384kHz against 192kHz. Very few recordings exist above 192kHz, so treat this as headroom, not as sound quality. |
| Streaming | evenly matched | Only Devialet Expert 140 Pro has Roon. Neither list is longer in a way that matters - check the one service you actually pay for. |
| Analogue inputs | B | Cambridge Audio Edge A takes more analogue sources - 3 against 1. |
| Phono stage | depends | Devialet Expert 140 Pro has a built-in phono stage (MM,MC) and Cambridge Audio Edge A 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 | B | Only Cambridge Audio Edge A offers preamp outputs - which decides whether you can add a subwoofer or a power amplifier later without replacing the box. |
| Headphones | depends | Only Cambridge Audio Edge A has a headphone output. Worth something if you listen late, nothing if you never do. |
| Amplifier class | depends | Devialet Expert 140 Pro is ADH (Analog Digital Hybrid) and Cambridge Audio Edge A is Class XA. Modern examples of both measure well - judge by the rest of the page. |
| Shelf space | depends | Devialet Expert 140 Pro takes up about 19% less shelf area (1521cm² against 1867cm²). |
| Price | evenly matched | Priced within a few per cent of each other. |
A Devialet Expert 140 Pro B Cambridge Audio Edge A
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 Edge A has the edge on paper, though not by much. The rows marked "depends" are more likely to decide this than the score is. If you play records, Devialet Expert 140 Pro 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.