Front view — side by side at true scale
AHarbeth NLE-1BSonus Faber Duetto
| A | B | |
|---|---|---|
| Manufacturer | Harbeth | Sonus Faber |
| Model | Harbeth NLE-1 | Sonus Faber Duetto |
| Height | 275 mm | 342 mm |
| Width | 166 mm | 197 mm |
| Depth | 230 mm | 272 mm |
| Weight | 7.6 kg | 7.5 kg |
| Enclosure | sealed | bass-reflex-front |
| Drivers | 1× 110 mm mid-bass (RADIAL polymer cone), 1× 19 mm tweeter (ferrofluid-cooled dome) | 1× 28 mm tweeter (silk soft dome), 1× 134 mm mid-bass (paper cone) |
| Frequency — low | 75 Hz | 37 Hz |
| Frequency — high | 20000 Hz | 30000 Hz |
| Sensitivity | — | — |
| Impedance | — | — |
| Recommended amp | — | — |
| MAP (USD) | $3,790 / pair | $3,999 / pair |
| Where to buy | Check availability ↗ | Check availability ↗ |
| Brand website | harbeth.co.uk ↗ | sonusfaber.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.

