Two versions of the same amplifier rather than two different designs, so the question is not which is better built but which set of features you actually need - and what the difference costs.
| Area | Better | Why |
|---|
| Power | A | Audioengine N22 G2 has more power - 50W against 22W into 8 ohms. That is about 3.6dB, so it plays usefully louder before it runs out and has more in hand on peaks. |
| Room size | depends | We rate Audioengine N22 G2 the better fit for a very large room, and Audioengine N22 for desk or near-field listening. Match the amplifier to the room you actually have, not the one you want. |
| Noise floor | B | Audioengine N22 is the quieter design on paper - 95dB against 90dB. Audible mainly with sensitive speakers in a quiet room. |
| Built-in DAC | A | Audioengine N22 G2 has a DAC on board; the other needs an external one, which is another box, another power lead and another purchase. |
| Analogue inputs | evenly matched | The same number of line-level inputs (2). |
| Room to grow | evenly matched | The same expansion options on both. |
| Price | B | Audioengine N22 costs less - $199 against $269 at list. |
| Watts per dollar | A | Audioengine N22 G2 is the cheaper watt - about $5 per watt against $9. A blunt measure, and it says nothing about how either sounds, but it is the honest one for raw output. |
A Audioengine N22 G2 B Audioengine N22
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: Audioengine N22 G2 measures better, Audioengine N22 costs about 26% less. With most speakers in most rooms that gap is smaller in practice than it looks here. 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 - Audioengine N22 G2 has the headroom, and headroom is what stops an amplifier hardening up on peaks. At desk distance or in a small room, 22 watts is already more than most people ever use, and the extra 28 watts would be headroom you pay for and never hear. If you already own a DAC or a streamer, the built-in one is money you are paying twice for, and Audioengine N22 becomes the more rational buy.
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.