Different price classes - Emotiva BasX A2+ costs roughly 2.7x what Yamaha R200A 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 | B | Emotiva BasX A2+ has more power - 160W against 100W into 8 ohms. That is about 2dB, so it plays usefully louder before it runs out and has more in hand on peaks. |
| Analogue inputs | A | Yamaha R200A takes more analogue sources - 3 against 2. |
| Phono stage | depends | Yamaha R200A has a built-in phono stage and Emotiva BasX A2+ 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. |
| Shelf space | depends | Yamaha R200A takes up about 16% less shelf area (1427cm² against 1700cm²), and it is 66mm shallower, which is the measurement that decides whether a rack door shuts. |
| Price | A | Yamaha R200A costs less - $300 against $799 at list. |
| Watts per dollar | A | Yamaha R200A is the cheaper watt - about $3 per watt against $5. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Yamaha R200A B Emotiva BasX A2+
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?
Yamaha R200A has the edge on paper, though not by much. The rows marked "depends" are more likely to decide this than the score is. 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 - Emotiva BasX A2+ 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 60 watts would be headroom you pay for and never hear - we rate Emotiva BasX A2+ poorly for near-field use for exactly that reason. If you play records, Yamaha R200A 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.