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 - 80W against 75W into 8 ohms is under 1dB, which is not an audible difference in loudness. |
| Grip on hard loads | evenly matched | Both behave much the same into 4 ohms - output nearly doubles (160W and 150W). |
| Built-in DAC | B | Both decode on board, but only Cambridge Audio Evo 75 handles DSD. |
| Streaming | B | Only Cambridge Audio Evo 75 has AirPlay 2 and Roon. |
| Phono stage | depends | Denon PMA-3000NE has a built-in phono stage and Cambridge Audio Evo 75 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. |
| Use with a TV | depends | Only Cambridge Audio Evo 75 has HDMI ARC, so the television can drive it directly and one remote controls the volume. If the system is for music only, this changes nothing. |
| Room to grow | B | Only Cambridge Audio Evo 75 offers a subwoofer output - which decides whether you can add a subwoofer or a power amplifier later without replacing the box. |
| Amplifier class | depends | Denon PMA-3000NE is Class A/B and Cambridge Audio Evo 75 is Class D. Class A/B runs warm and is the long-established mainstream choice; Class D runs cool and draws almost nothing at idle. Modern examples of both measure well - judge by the rest of the page. |
| Shelf space | depends | Cambridge Audio Evo 75 takes up about 42% less shelf area (1190cm² against 2066cm²), and it is 103mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | B | Cambridge Audio Evo 75 costs less - $2,499 against $3,799 at list. |
| Watts per dollar | B | Cambridge Audio Evo 75 is the cheaper watt - about $33 per watt against $47. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Denon PMA-3000NE B Cambridge Audio Evo 75
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 Evo 75 is the easier recommendation: it leads on most of the measured areas and costs less. Take Denon PMA-3000NE if one of the "depends" rows above describes your system. If you play records, Denon PMA-3000NE saves you buying a phono stage; if you do not, ignore that row entirely. If this sits under a television, Cambridge Audio Evo 75 is the one to buy - HDMI ARC means the TV remote controls the volume and there is no second box in the way.
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.