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Denon X4800H vs X6800H
Nine amplified channels or eleven — which should you buy?
The short answer
Buy the Denon AVR-X4800H unless you're committed to a 7.x.4 speaker layout — the like-for-like power gap is ~0.5 dB and everything else our data records is identical. Buy the X6800H to power eleven channels from one chassis, no external amp.
As tracked by Home Theater Builder: the Denon AVR-X4800H tracks at $2,799; the Denon AVR-X6800H at $3,799. How we verify this data → Denon's top two mainstream receivers, and for once the power figures are perfectly comparable: both are rated at 8Ω, two channels driven, 0.05% THD. The real question is channel count.
Specifications · side by side · per-field provenance
● SOURCE-TRACKED| Spec | Denon AVR-X4800H | Denon AVR-X6800H |
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| Price | $2,799 | $3,799 |
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| Brand | Denon | Denon |
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| Channel Config | 9.4 | 11.4 |
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| Main Channels | 9 | 11 |
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| Processing Channels | 11 | 13 |
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| Sub Pre Outs | 4 | 4 |
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| Watts Per Channel 8ohm | 125 | 140 |
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| THD Percent | 0.05 | 0.05 |
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| Power Measurement Channels Driven | two channels driven | two channels driven |
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| Impedance Range | 4 – 16 Ω/ohms | 4 – 16 Ω/ohms |
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| Impedance Min Ohms | 4 | 4 |
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| Impedance Max Ohms | 16 | 16 |
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| Dolby Atmos | Yes | Yes |
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| Dts X | Yes | Yes |
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| Auro 3d | Yes | Yes |
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| Imax Enhanced | Yes | Yes |
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| Room Correction System | Audyssey MultEQ XT32 | Audyssey MultEQ XT32 |
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| Measurement Mic Included | Yes | Yes |
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| HDMI Inputs | 7 | 7 |
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| HDMI Outputs | 3 | 3 |
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| HDMI Max Bandwidth Gbps | 40 | 40 |
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| HDMI Earc Port Count | 1 | 1 |
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| HDR Support | HDR10, Dolby Vision, HLG, HDR10+, Dynamic HDR | HLG, HDR, Dolby Vision, HDR10+, Dynamic HDR |
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| VRR Passthrough | Yes | Yes |
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| ALLM Support | Yes | Yes |
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| Phono Input | Yes | Yes |
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| Heos | Yes | Yes |
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| Width Inches | 17.1 | 17.1 |
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| Height Inches | 6.6 | 6.6 |
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| Depth Inches | 14.9 | 14.9 |
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| Weight Lbs | 29.1 | 34.4 |
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| Power Consumption W | 710 | 750 |
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| Zone 2 Capable | not stated | Yes |
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| Zone 3 Capable | not stated | Yes |
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| Form Factor | not stated | full size |
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Shaded rows differ · green dot = lab-measured · amber = manufacturer-verified · blue = retailer/community-reported · grey = estimated · “not stated” means exactly that
Reading the numbers honestly
Like-for-like power: 125W vs 140W under the identical strict context — about 0.5 dB, which is not a reason to spend more. The stated difference that matters is topology: the X6800H is an 11.4 design with 13-channel processing, meaning it can power a full 7.x.4 layout with no external amplifier; the X4800H is a 9.4 with 11-channel processing, so 7.x.4 needs a two-channel amp added. Everything else reads as parity: four independent sub outs, XT32, seven HDMI inputs and three outputs, and a stated 4–16Ω rating on both.
Compatibility · computed, not written
Checked against a bookshelf that dips to a stated 3.5Ω like the KEF LS50 Meta: KEF LS50 Meta
Can the Denon AVR-X4800H drive the KEF LS50 Meta?
Denon AVR-X4800H states a 4Ω-minimum rating; the KEF LS50 Meta dips to a stated 3.5Ω minimum, a little below that floor. Most receivers handle a marginal dip at normal volumes — it's worth watching only at very high output on an entry-level unit.
Can the Denon AVR-X6800H drive the KEF LS50 Meta?
Denon AVR-X6800H states a 4Ω-minimum rating; the KEF LS50 Meta dips to a stated 3.5Ω minimum, a little below that floor. Most receivers handle a marginal dip at normal volumes — it's worth watching only at very high output on an entry-level unit.
Computed from the catalog's normalized fields — the same fields the builder's compatibility engine reads. A missing field reads as "can't check", never as a pass.
Check either one against your own build →Gaming & connectivity · answered from the spec sheets
Can the Denon AVR-X4800H and Denon AVR-X6800H pass 4K/120 through?
The Denon AVR-X4800H states 40 Gbps HDMI bandwidth — enough for full 4K/120; the Denon AVR-X6800H states 40 Gbps HDMI bandwidth — enough for full 4K/120.
The verdict
Buy the Denon AVR-X4800H unless you're committed to a 7.x.4 speaker layout — the like-for-like power gap is ~0.5 dB and everything else our data records is identical. Buy the X6800H to power eleven channels from one chassis, no external amp.
Up to 5.x.4 or 7.x.2Denon AVR-X4800H — Nine amplified channels cover both layouts; the extra spend buys headroom you won't wire.
Full 7.x.4, one boxDenon AVR-X6800H — 11 amplified channels and 13-channel processing, stated — the only stated difference that changes what you can build.
Multi-sub bass either wayEither — Both state four independent subwoofer pre-outs with XT32 calibration.
What our normalized data adds
NOT ON THE SPEC SHEETS- A fully like-for-like power comparison: 125W vs 140W, both stated at 8Ω / two channels driven / 0.05% THD — about 0.5 dB apart.
- Amplified channels are the real fork: 9 (X4800H) vs 11 (X6800H), with 11 vs 13 processing channels — one powers 7.x.4 natively, the other needs an external stereo amp for it.
- Everything else our fields record is parity: 4 independent sub pre-outs, Audyssey MultEQ XT32, 7-in/3-out HDMI, 4–16Ω stated impedance, Auro-3D and IMAX Enhanced on both.
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