Pioneer VSX-21
| Brand | Pioneer |
| Model | VSX-21 |
| Amplified channels | |
| Processing channels | |
| Subwoofer outputs | |
| Power per channel, 8 Ω (W) | 80 |
| Power rated from (Hz) | 20 |
| Power rated to (Hz) | 20000 |
| Power rated at THD (%) | 0.09 |
| Power rated with channels driven | |
| HDMI inputs | |
| HDMI outputs | |
| 8K video | |
| Dolby Atmos | |
| DTS:X | |
| Zones | |
| Room correction | |
| Room correction system | |
| Phono input | |
| Wi-Fi | |
| Bluetooth | |
| AirPlay 2 | |
| Height (mm) | |
| Width (mm) | |
| Depth (mm) | |
| Weight (kg) |