These are not the same size of amplifier: Cambridge Audio MXW70 has roughly 7x the power of Schiit Gjallarhorn F. That is about 8.5dB, 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 | Cambridge Audio MXW70 has more power - 70W against 10W into 8 ohms. That is about 8.5dB - a different class of amplifier rather than a bigger version of the same one, and far more than most rooms will ever ask for. |
| Grip on hard loads | A | Cambridge Audio MXW70 holds up better into a 4-ohm load: its output increases strongly to 125W, where the other increases strongly. That matters with demanding speakers far more than the 8-ohm figure does. |
| Analogue inputs | evenly matched | The same number of line-level inputs (2). |
| Room to grow | evenly matched | The same expansion options on both. |
| Amplifier class | depends | Cambridge Audio MXW70 is Class D and Schiit Gjallarhorn F is Class A/B. Class D runs cool and draws almost nothing at idle; 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 | Schiit Gjallarhorn F costs less - $299 against $599 at list. |
| Watts per dollar | A | Cambridge Audio MXW70 is the cheaper watt - about $9 per watt against $30. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Cambridge Audio MXW70 B Schiit Gjallarhorn F
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: Cambridge Audio MXW70 measures better, Schiit Gjallarhorn F costs about 50% less. With most speakers in most rooms that gap is smaller in practice than it looks here. If your speakers are a difficult load - 4 ohms nominal, big woofers, or a sensitivity in the low 80s - Cambridge Audio MXW70 is the safer partner, because how an amplifier behaves when the impedance drops matters more than its 8-ohm rating. 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 - Cambridge Audio MXW70 has the headroom, and headroom is what stops an amplifier hardening up on peaks. At desk distance or in a small room, 10 watts is already more than most people ever use, and the extra 60 watts would be headroom you pay for and never hear.
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.