Head to head
Denon AVR-S670H vs Yamaha RX-A2A
Denon's five-channel entry receiver against Yamaha's seven-channel AVENTAGE RX-A2A. The deciding factor is whether the room will ever have height speakers.
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This pairing comes up when a first-time buyer has a PS5 and a 5.1 speaker set and finds the Denon at the bottom of the range and the Yamaha one tier up. Both take 8K and 4K120 on three HDMI inputs and have eARC, so a console works on either. The Yamaha adds two amplified channels for Atmos height speakers, front pre-outs, and YPAO room correction; the Denon costs about 325 dollars less at our November 2026 catalog prices. The one question that decides it: will this room ever have height speakers?
Black Friday 2026
The sale price that makes each one worth buying
- Denon AVR-S670HTypically $519. Buy at $440 or under.
- Yamaha AVENTAGE RX-A2ATypically $844. Buy at $720 or under.
Black Friday is Friday, November 27. We check these prices twice a week through Cyber Monday.
| Spec | ||
|---|---|---|
| Best for | Basic 5.1 rooms and apartments | 5.1.2 Atmos rooms, MusicCast households |
| Price tier | Budget | Mid-range |
| Amplified channels | 5.2 | 7.2 |
| Rated power (8 ohm, 2 ch) | 75 W | 100 W (0.06% THD) |
| Dolby Atmos | No | Yes, up to 5.1.2 |
| HDMI inputs / outputs | 6 in, 1 out | 7 in, 1 out |
| 8K and 4K120 inputs | 3 of 6 | 3 of 7 (8K on HDMI 1 to 3) |
| Room correction | Audyssey MultEQ | YPAO R.S.C. with multipoint |
| Pre-outs | 2 sub outs only | Front L/R, 2 sub outs |
| Streaming | HEOS, AirPlay 2, Bluetooth | MusicCast, AirPlay 2, Bluetooth |
Atmos is the real dividing line
The S670H has five amplified channels, and Denon's own specification table lists Dolby Atmos as not supported, so it is a 5.1 receiver for as long as you own it. The RX-A2A has seven amplified channels and supports Dolby Atmos and DTS:X, which gives you 5.1.2 or 7.1 from one box.
Neither receiver has surround or height pre-outs, so neither grows past those layouts without being replaced. If you only ever run 5.1, the Yamaha's two extra channels are money spent on nothing.
Power: 100 watts against 75 is a small step
Denon rates the S670H at 75 W per channel into 8 ohms; Yamaha rates the RX-A2A at 100 W (20 Hz to 20 kHz, two channels driven, 0.06 percent THD). That is a difference of about 1.25 dB at the rated limit, which is under what most listeners notice, and AVForums found the Yamaha's real-world power closer to a mid-range RX-V than its rating suggests.
In a small or medium room with ordinary speakers, both have enough. Choose on channels and features, not on the watt figure.
Room correction and ecosystem
The Denon includes base Audyssey MultEQ, which measures at fewer positions than the XT version on the Denon AVR-X1800H. Yamaha's YPAO R.S.C. measures up to eight seats, and its reflected sound control helps in bare rooms with hard walls.
Streaming follows the brand: HEOS on the Denon, MusicCast on the Yamaha, and AirPlay 2 on both. If you already own speakers from one of those ecosystems, that can decide it.
Price
At our November 2026 catalog prices the S670H is about 519 dollars and the RX-A2A about 844 dollars, a gap of roughly 325 dollars or 63 percent. Check both before you buy, since sales move the gap.
If Atmos is the plan, note that the Denon AVR-X1800H sits at almost the same price as the RX-A2A. See our Yamaha RX-A2A vs Denon AVR-X1800H comparison before you commit.
Pick the Denon AVR-S670H if
- Your system is 5.1 and will stay 5.1, in an apartment or a room where ceiling or up-firing speakers are not an option.
- You want the lowest price that still has HDMI 2.1 inputs for a console and eARC.
- The receiver is a stopgap and you expect to replace the whole system in a few years.
Pick the Yamaha RX-A2A if
- You want Dolby Atmos now or within the life of the receiver; seven channels give you 5.1.2.
- Your room has bare, hard walls where YPAO's reflected sound control helps.
- You want front pre-outs to add a stereo amp for music later, or you already use MusicCast speakers.
Verdict
Buy the Denon AVR-S670H for a 5.1 room that will stay 5.1; it has the same console-ready HDMI and eARC and costs about 325 dollars less. Buy the Yamaha RX-A2A when height speakers are even a possibility, because the S670H cannot be upgraded to Atmos and the RX-A2A can. The exception is a buyer who wants Atmos and is not tied to Yamaha: the Denon AVR-X1800H costs about the same as the RX-A2A and is the safer default, so compare it first.
Common questions
- Can the Denon AVR-S670H do Dolby Atmos?
- No. Denon's specification table lists Dolby Atmos as not supported, and with five amplified channels and no height pre-outs there is no way to add height speakers later.
- Do both work with a PS5 or Xbox Series X?
- Yes. Each has three HDMI inputs that take 8K and 4K120 (Yamaha lists 8K input on HDMI 1 to 3) and eARC on its single HDMI output. Put the console on one of those three inputs.
- Is the Yamaha's extra 25 watts audible?
- Barely. 100 W against 75 W is about 1.25 dB at the rated limit, and AVForums found the RX-A2A's real-world output closer to a mid-range RX-V than its rating. Speaker sensitivity and room size matter far more.
- Is YPAO better than Audyssey MultEQ?
- The RX-A2A's YPAO adds multipoint measurement and reflected sound control, which helps in a bare, reflective room. The S670H has base Audyssey MultEQ, which measures at fewer positions than Audyssey XT. Neither replaces good speaker placement.
- Can either run 5.1.4?
- No. Neither has surround or height pre-outs, so 5.1.2 or 7.1 is the ceiling on the Yamaha and 5.1 is the ceiling on the Denon.