These are not the same size of amplifier: McIntosh MAC7200 has roughly 2x the power of Cambridge Audio Edge A. That is about 3dB, so it is a question of room size and how hard your speakers are to drive, not of one being the better amplifier.
| Area | Better | Why |
|---|
| Power | A | McIntosh MAC7200 has more power - 200W against 100W into 8 ohms. That is about 3dB, so it plays usefully louder before it runs out and has more in hand on peaks. |
| Built-in DAC | evenly matched | Both have a DAC on board with much the same capability. |
| Phono stage | depends | McIntosh MAC7200 has a built-in phono stage (MM) 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. |
| Use with a TV | depends | Only Cambridge Audio Edge A 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 | evenly matched | The same expansion options on both. |
| Amplifier class | depends | McIntosh MAC7200 is Class A/B and Cambridge Audio Edge A is Class XA. 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. |
| Shelf space | depends | Cambridge Audio Edge A takes up about 25% less shelf area (1867cm² against 2484cm²), and it is 154mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | B | Cambridge Audio Edge A costs less - $6,499 against $9,500 at list. |
| Watts per dollar | A | McIntosh MAC7200 is the cheaper watt - about $48 per watt against $65. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A McIntosh MAC7200 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?
The usual trade-off: McIntosh MAC7200 measures better, Cambridge Audio Edge A costs about 32% less. With most speakers in most rooms that gap is smaller in practice than it looks here. Start with the room. In a large or open-plan room, or with speakers that are hard to drive - low sensitivity, or an impedance that dips - McIntosh MAC7200 has the headroom, and headroom is what stops an amplifier hardening up on peaks. At desk distance or in a small room, 100 watts is already more than most people ever use, and the extra 100 watts would be headroom you pay for and never hear. If you play records, McIntosh MAC7200 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.