Front view — side by side at true scale
ACastle Avon 1BKEF Q1 Meta
| A | B | |
|---|---|---|
| Manufacturer | Castle | KEF |
| Model | Castle Avon 1 | KEF Q1 Meta Meta |
| Height | 320 mm | 302 mm |
| Width | 180 mm | 180 mm |
| Depth | 260 mm | 277 mm |
| Weight | 5.8 kg | 6.1 kg |
| Enclosure | transmission-line | bass-reflex-rear |
| Drivers | 1× 130 mm mid-bass, 1× tweeter (ribbon) | 1× 25 mm tweeter (MAT aluminium dome), 1× 130 mm mid-bass (aluminium cone) |
| Frequency — low | 60 Hz | 51 Hz |
| Frequency — high | 20000 Hz | 20000 Hz |
| Sensitivity | 87 dB | 86 dB |
| Impedance | 8 Ω | 4 Ω |
| Recommended amp | 25–100 W | 10–150 W |
| MAP (USD) | — | $749 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | castle.uk.com ↗ | international.kef.com ↗ |
| Product page | Open product page ↗ | Open product page ↗ |
Larger value highlighted in green. For low-frequency extension, lower Hz = greater bass reach, so the deeper side is highlighted.

