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 | B | Rotel Diamond RA-6000 has more power - 235W against 150W into 8 ohms. That is about 1.9dB, which is a small step in loudness but real headroom on peaks. |
| Room size | depends | We rate Hegel H200 the better fit for desk or near-field listening, a small room and a mid-size room, and Rotel Diamond RA-6000 for a very large room. Match the amplifier to the room you actually have, not the one you want. |
| Speaker load rating | A | Hegel H200 is rated down to 2 ohms against 4, so it is the safer partner for a low-impedance speaker. |
| Noise floor | B | Rotel Diamond RA-6000 is the quieter design on paper - 103dB against 100dB. Audible mainly with sensitive speakers in a quiet room. |
| Built-in DAC | B | Both decode on board. Rotel Diamond RA-6000 goes higher - 384kHz against 192kHz. Very few recordings exist above 192kHz, so treat this as headroom, not as sound quality. |
| Streaming | evenly matched | Only Hegel H200 has Chromecast. Neither list is longer in a way that matters - check the one service you actually pay for. |
| Analogue inputs | B | Rotel Diamond RA-6000 takes more analogue sources - 4 against 3. |
| Room to grow | evenly matched | The same expansion options on both. |
| Headphones | depends | Only Rotel Diamond RA-6000 has a headphone output. Worth something if you listen late, nothing if you never do. |
| Price | B | Rotel Diamond RA-6000 costs less - $4,499 against $4,995 at list. |
| Watts per dollar | B | Rotel Diamond RA-6000 is the cheaper watt - about $19 per watt against $33. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Hegel H200 B Rotel Diamond RA-6000
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?
Rotel Diamond RA-6000 has the edge on paper, though not by much. The rows marked "depends" are more likely to decide this than the score is.
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.