Rank #9 in Best AV Receiver 2026: 10 Ranked, and the Wattage Numbers That Don't Add Up
Denon AVC-S670H 5.2-Channel AV Amplifier
- Rating
- 4.4
- Ratings
- 19
- Rank
- #9
Price and rating as shown on Amazon when we collected them. Both change.
The Denon AVC-S670H is a 5.2-channel AV amplifier listed at £579.00 and ranked ninth in this guide, and it is the exception to the pattern the rest of the article describes: its headline number survives the small print. The bullet promises 'up to 135W per channel', and the spec table underneath gives both 'Output Power: 135 Watts' and 'Output Wattage: 135 Watts' — the same figure, three times over, with no 110 W gap.
Its ratings are where the arithmetic stops lining up. The listing shows 4.4 out of 5 from 19 ratings, while the star breakdown on the same page totals 100 — 67 five-star, 24 four-star, 3 three-star and 6 one-star. Six one-star ratings against 67 five-star is not a narrow spread of opinion. Everything on this page comes from the Amazon listing, not from any testing we carried out.
How those 19 ratings break down
An average hides its own shape. This is the spread behind the 4.4 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £579.00 |
|---|---|
| Rating | 4.4 out of 5, from 19 ratings |
| Star breakdown on the same page | 67 five-star, 24 four-star, 3 three-star, 6 one-star (100 total) |
| Claimed power (bullet) | Up to 135 W per channel |
| Output Power (spec table) | 135 Watts |
| Output Wattage (spec table) | 135 Watts |
| Channels | 5.2 surround configuration; 'Number of Channels: 5' (as listed) |
| HDMI | 6 inputs and 1 output; 8K on three of the six inputs |
What it is up against
The rivals it was ranked against in Best AV Receiver 2026: 10 Ranked, and the Wattage Numbers That Don't Add Up.
Questions people ask
How much power does the Denon AVC-S670H put out?
The bullet says up to 135W per channel, and the Denon AVC-S670H spec table repeats 135 Watts for both 'Output Power' and 'Output Wattage'. The two figures agree here.
How many HDMI inputs does the Denon AVC-S670H have?
The Denon AVC-S670H spec table lists 'Total HDMI Port: 6', and the bullet states 8K is supported on three of those six inputs plus one output.
Is the Denon AVC-S670H a 5.2 or a 5-channel amplifier?
The Denon AVC-S670H name and its 'Surround Sound Channel Configuration' both say 5.2, while a separate spec field reads 'Number of Channels: 5' (as listed). The listing carries both figures.
What can the Denon AVC-S670H stream?
The Denon AVC-S670H has HEOS Built-in for Spotify, Tidal and Amazon Music HD, plus AirPlay 2, Bluetooth, TuneIn internet radio and Apple Music via AirPlay. The spec table lists Spotify and TIDAL under supported internet services.
How is the Denon AVC-S670H rated by buyers?
The Denon AVC-S670H shows 4.4 out of 5 from 19 ratings, while the star breakdown on the same page totals 100 — 67 five-star, 24 four-star, 3 three-star and 6 one-star.
How much does the Denon AVC-S670H cost?
£579.00 as listed — less than the £877.72 AVR-S970H in this guide and more than the £449 AVR-S770H.
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