Yes. The Nintendo DSi features a standard 3.5 mm (1/8") headphone jack on the bottom edge. Any wired headphones/earbuds with a 3.5 mm TRS plug will work for stereo audio.
| Model | Jack | Mic Input | Bluetooth |
|---|---|---|---|
| DS Lite | 3.5 mm | No | No |
| DSi / DSi XL | 3.5 mm | No | No |
| 3DS / 2DS / New 3DS | 3.5 mm | Yes (TRRS) | No (except New 3DS for specific accessories) |
Enjoy your games — Rhythm Heaven and Elite Beat Agents sound great with decent earbuds.