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Dimensions
Size comparison
Echo Show 21Authentics 500
| Echo Show 21 | Authentics 500 | Difference | |
|---|---|---|---|
| Height | 340 mm | 240 mm | +100 mm |
| Width | 540 mm | 447 mm | +93 mm |
| Depth | 38 mm | 255.7 mm | −217.7 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Echo Show 21 better than Authentics 500?
Echo Show 21 has no measurable advantages in this pair.
Why is Authentics 500 better than Echo Show 21?
Authentics 500 has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Output power | — | 270 W |
| Speaker channels | — | 3.1 |
| Channel count | — | 3.1 |
| Lowest frequency | — | 40 Hz |
| Highest frequency | — | 20,000 Hz |
| Dolby Atmos | — | Yes |
| Stereo | — | Yes |
| Battery & charging | ||
| Mains powered | Yes | Yes |
| Battery powered (portable) | No | No |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | — | 5.3 |
| Bluetooth codecs | — | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | No |
| LDAC | — | No |
| 3.5 mm jack / AUX | — | Yes |
| Smart & streaming | ||
| Wi-Fi | Yes | Yes |
| AirPlay | — | Yes |
| Chromecast / Google Cast | — | Yes |
| Spotify Connect | — | Yes |
| Multiroom | — | Yes |
| Voice assistant | Alexa | Alexa, Google Assistant |
| Voice assistant built in | Yes | Yes |
| Screen | Yes | — |
| Companion app | — | Yes |
| Design & build | ||
| Weight | — | 11,400 g |
| Width | 540 mm | 447 mm |
| Height | 340 mm | 240 mm |
| Depth | 38 mm | 256 mm |
| Colours | Black | Black |
