Front view — side by side at true scale
AQuad S-4BFyne Audio F55E
Click either cabinet to swap A ↔ B · Reference height: 925 mm (92.5 cm) · 1 mm = 0.61 px
| A | B | |
|---|---|---|
| Manufacturer | Quad | Fyne Audio |
| Model | Quad S-4 | Fyne Audio F55E |
| Height | 870 mm | 925 mm |
| Width | 180 mm | 210 mm |
| Depth | 300 mm | 236 mm |
| Weight | 20.5 kg | 11.9 kg |
| Enclosure | passive-radiator | bass-reflex-down |
| Drivers | 1× tweeter (ribbon), 1× 100 mm midrange (woven Kevlar cone), 2× 125 mm woofer (woven Kevlar cone) | 1× 19 mm tweeter (titanium dome), 1× 125 mm mid-bass (multi-fibre cone), 1× 125 mm woofer (multi-fibre cone) |
| Frequency — low | 44 Hz | 42 Hz |
| Frequency — high | 23000 Hz | 38000 Hz |
| Sensitivity | 88 dB | 88 dB |
| Impedance | 6 Ω | 8 Ω |
| Recommended amp | 40–200 W | 30–120 W |
| MAP (USD) | $1,499 / pair | $1,143 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | quad-hifi.co.uk ↗ | fyneaudio.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.