Different price classes - Denon AVR-X4800H costs roughly 3.2x what JBL MA710 does. Expect it to lead on paper; the question is whether you will hear the difference through the speakers you own.
| Area | Better | Why |
|---|
| Power | evenly matched | Effectively the same output - 110W against 125W into 8 ohms is under 1dB, which is not an audible difference in loudness. |
| Analogue inputs | B | Denon AVR-X4800H takes more analogue sources - 5 against 2. |
| Room to grow | B | Only Denon AVR-X4800H offers preamp outputs - which decides whether you can add a subwoofer or a power amplifier later without replacing the box. |
| Built-in sources | depends | Denon AVR-X4800H has a radio tuner built in. That is one less box if you still play discs or listen to radio, and dead weight if you do not. |
| Amplifier class | depends | JBL MA710 is D and Denon AVR-X4800H is AB. 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 | A | JBL MA710 costs less - $880 against $2,799 at list. |
| Watts per dollar | A | JBL MA710 is the cheaper watt - about $8 per watt against $22. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A JBL MA710 B Denon AVR-X4800H
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?
Denon AVR-X4800H is ahead, but on only 1 of the measured areas, and it costs about 3.2x the price. That is a lot of money for a narrow margin - JBL MA710 is the sensible buy unless a specific feature above decides it for you. Think about the whole system: the roughly $1,919 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.