Denon AVR-S670H vs Denon AVR-X1800H
The Denon AVR-S670H costs less ($649 vs $849). The Denon AVR-X1800H decodes Dolby Atmos, powers more speakers (7 vs 5) and processes more channels (7 vs 5).
What each one works with
Checked against every product in our catalogue by the same engine as the compatibility checker.
| AVR-S670H | AVR-X1800H | |
|---|---|---|
| Speakers it drives | 82 of 98, 15 after a setting change | 98 of 98, 17 after a setting change |
| Subwoofers that connect | 17 of 17 | 17 of 17 |
| Largest layouts on its own amps | 5.1 | 5.1.2, 7.1 |
Specs side by side
Values that differ are bold. A dash means that model doesn't publish the spec.
| AVR-S670H | AVR-X1800H | |
|---|---|---|
| Amplifier channels | 5 | 7 |
| Processing channels | 5 | 7 |
| Height formats | None | Dolby Atmos, DTS:X |
| Power | 75 W at 8 Ω | 80 W at 8 Ω |
| Room correction | Audyssey MultEQ | Audyssey MultEQ XT |
| Size | 17×6×13 in | 17×6×13 in |
| Lowest speaker impedance | 4 Ω | 4 Ω |
| Impedance setting | 8 Ω, 6 Ω, 4 Ω | 8 Ω, 6 Ω, 4 Ω |
| Subwoofer outputs | 2 | 2 |
| Weight | 7.8 kg (17.2 lb) | 8.6 kg (19 lb) |
| MSRP | $649 each (MSRP, September 2026) | $849 each (MSRP, September 2026) |
| Speaker layouts | — | 7.1, 5.1.2 |
Every spec and pairing: Denon AVR-S670H, Denon AVR-X1800H.
Try either one in your own room.
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References
- Denon AVR-S670H: Spec sheet, denon.com, retrieved September 15, 2026
- Denon AVR-S670H: Manufacturer product page, denon.com, retrieved September 15, 2026
- Denon AVR-S670H: Owner's manual, manuals.denon.com, retrieved September 15, 2026
- Denon AVR-S670H: Dimensional drawing, manuals.denon.com, retrieved September 15, 2026
- Denon AVR-X1800H: Spec sheet, denon.com, retrieved September 15, 2026
- Denon AVR-X1800H: Manufacturer product page, denon.com, retrieved September 15, 2026
- Denon AVR-X1800H: Manufacturer product page, denon.com, retrieved September 15, 2026 (2)
- Denon AVR-X1800H: Owner's manual, manuals.denon.com, retrieved September 15, 2026
- Denon AVR-X1800H: Dimensional drawing, manuals.denon.com, retrieved September 15, 2026
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