Different price classes - Hegel H400 costs roughly 1.9x what Hegel A200 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 | A | Hegel H400 has more power - 250W against 150W into 8 ohms. That is about 2.2dB, so it plays usefully louder before it runs out and has more in hand on peaks. |
| Room size | depends | We rate Hegel H400 the better fit for a very large room, and Hegel A200 for desk or near-field listening, a small room and a mid-size room. Match the amplifier to the room you actually have, not the one you want. |
| Bass control | evenly matched | Similar damping factor (4000 vs 4000). |
| Noise floor | evenly matched | Much the same signal-to-noise ratio (100dB vs 100dB). |
| Built-in DAC | A | Hegel H400 has a DAC on board; the other needs an external one, which is another box, another power lead and another purchase. |
| Analogue inputs | B | Hegel A200 takes more analogue sources - 4 against 3. |
| Phono stage | depends | Hegel A200 has a built-in phono stage (MM, derived from the Hegel V10 phono stage) and Hegel H400 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 | evenly matched | The same expansion options on both. |
| Headphones | depends | Only Hegel A200 has a headphone output. Worth something if you listen late, nothing if you never do. |
| Price | B | Hegel A200 costs less - $3,995 against $7,700 at list. |
A Hegel H400 B Hegel A200
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?
Hegel H400 is ahead, but on only 1 of the measured areas, and it costs about 93% more. That is a lot of money for a narrow margin - Hegel A200 is the sensible buy unless a specific feature above decides it for you. 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 - Hegel H400 has the headroom, and headroom is what stops an amplifier hardening up on peaks. At desk distance or in a small room, 150 watts is already more than most people ever use, and the extra 100 watts would be headroom you pay for and never hear - we rate Hegel H400 poorly for near-field use for exactly that reason. If you play records, Hegel A200 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.