The X3900H generation against the Cinema 50 — which should you buy?
The short answer
These two are the same platform on paper: nine amplified channels, eleven processing channels and four subwoofer pre-outs on both, with power ratings five watts apart under identical conditions — 105W against 110W at 8Ω, two channels driven, 0.08% THD, or about 0.2 dB. Buy the Marantz Cinema 50 if the fuller sheet is what you want: it states Audyssey MultEQ XT32, a 4–16Ω impedance range, a 40 Gbps HDMI figure and an eARC port, none of which our X3900H row records, plus a third HDMI output the Denon does not have. Buy the Denon AVR-X3900H if stated VRR passthrough for a 4K/120 console is on your list, because the Cinema 50's row does not state it, and read the price row above before you decide — $1,849 vs $2,000 there.
As tracked by Home Theater Builder: the Denon AVR-X3900H tracks at $1,849; the Marantz Cinema 50 at $2,000.How we verify this data →
Denon's AVR-X3900H and Marantz's Cinema 50 come off one platform: nine amplified channels, eleven processing channels and four subwoofer pre-outs on both rows — $1,849 vs $2,000 in the price row above. What separates them in our data is which fields each sheet fills in.
Specifications · side by side · per-field provenance
● SOURCE-TRACKED
Spec
Denon AVR-X3900H
Marantz Cinema 50
Price
$1,849
$2,000
Brand
Denon
Marantz
Channel Config
9.4
9.4
Main Channels
9
9
Processing Channels
11
11
Sub Pre Outs
4
4
Zone 2 Capable
Yes
Yes
Watts Per Channel 8ohm
105
110
Watts Per Channel 6ohm
135
not stated
THD Percent
0.08
0.08
Power Measurement Channels Driven
two channels driven
two channels driven
Dolby Atmos
Yes
Yes
Dts X
Yes
Yes
Auro 3d
Yes
Yes
Imax Enhanced
Yes
Yes
Measurement Mic Included
Yes
Yes
HDMI Inputs
6
6
HDMI Outputs
2
3
HDR Support
HDR10, Dolby Vision, HLG, HDR10+, Dynamic HDR
HDR10, HLG, Dolby Vision, HDR10+, Dynamic HDR
VRR Passthrough
Yes
not stated
ALLM Support
Yes
Yes
Phono Input
Yes
Yes
Heos
Yes
Yes
Streaming Services
Spotify Connect
Spotify Connect, TuneIn, Pandora, Deezer, Amazon Music HD
Width Inches
17.1
17.4
Height Inches
6.6
6.5
Depth Inches
14.9
15.5
Weight Lbs
27.6
24
Power Consumption W
660
680
Zone 3 Capable
not stated
No
Impedance Range
not stated
4 – 16 Ω/ohms
Impedance Min Ohms
not stated
4
Impedance Max Ohms
not stated
16
Room Correction System
not stated
Audyssey MultEQ XT32
HDMI Max Bandwidth Gbps
not stated
40
HDMI Earc Port Count
not stated
1
Wifi
not stated
Yes
Bluetooth
not stated
Yes
Airplay2
not stated
Yes
Ip Control
not stated
Yes
Trigger Outputs Count
not stated
1
Form Factor
not stated
full size
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
Start with the comparison that is genuinely like-for-like: 105W (Denon) against 110W (Marantz), both at 8Ω with two channels driven at 0.08% THD. That is about 0.2 dB, and for once the measurement contexts match exactly, so the two numbers can be read side by side. The architecture matches too — 9.4 on both, eleven processing channels, four subwoofer pre-outs, Dolby Atmos, DTS:X, Auro-3D, IMAX Enhanced, six HDMI inputs and a measurement microphone included. Where they part is disclosure. The Cinema 50 states four figures our X3900H row does not record at all: Audyssey MultEQ XT32, a 4–16Ω impedance range, a 40 Gbps HDMI bandwidth figure (recorded from a retailer listing rather than the manufacturer) and one eARC port — and it states three HDMI outputs where the Denon states two. Because Denon's siblings in our own catalog do state a room-correction platform, treat that particular blank as a gap in our row rather than a missing feature, and confirm it before you buy. It runs the other way once: the Denon states VRR passthrough and a 135W 6Ω figure, and the Cinema 50's row states neither.
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-X3900H drive the KEF LS50 Meta?
Denon AVR-X3900H publishes no rated impedance range, so the pairing with the KEF LS50 Meta (which dips to a stated 3.5Ω minimum) can't be verified from its spec sheet — we treat that as "can't check", not a pass.
Can the Marantz Cinema 50 drive the KEF LS50 Meta?
Marantz Cinema 50 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.
These two are the same platform on paper: nine amplified channels, eleven processing channels and four subwoofer pre-outs on both, with power ratings five watts apart under identical conditions — 105W against 110W at 8Ω, two channels driven, 0.08% THD, or about 0.2 dB. Buy the Marantz Cinema 50 if the fuller sheet is what you want: it states Audyssey MultEQ XT32, a 4–16Ω impedance range, a 40 Gbps HDMI figure and an eARC port, none of which our X3900H row records, plus a third HDMI output the Denon does not have. Buy the Denon AVR-X3900H if stated VRR passthrough for a 4K/120 console is on your list, because the Cinema 50's row does not state it, and read the price row above before you decide — $1,849 vs $2,000 there.
Amplifier powerEither — 105W against 110W, both at 8Ω with two channels driven at 0.08% THD — about 0.2 dB, and the contexts match exactly.
Channels and subwoofer outputsEither — Both rows state nine amplified channels, eleven processing channels and four subwoofer pre-outs.
A stated room-correction platformMarantz Cinema 50 — The Cinema 50 states Audyssey MultEQ XT32; our X3900H row records no room-correction system at all, which is a silence in our data rather than an absence in the product.
HDMI you can verifyMarantz Cinema 50 — A stated 40 Gbps bandwidth figure, one eARC port and three HDMI outputs; our Denon row states two outputs and neither of the other two figures.
4K/120 gamingDenon AVR-X3900H — The X3900H states VRR passthrough; the Cinema 50's row does not state it, and stated beats assumed.
Low-impedance speakersMarantz Cinema 50 — The Cinema 50 states a 4–16Ω range; our Denon row states no impedance range to check a speaker against.
A fully like-for-like power comparison: 105W against 110W, both at 8Ω with two channels driven at 0.08% THD — roughly 0.2 dB, which no listener places.
Identical channel architecture on both rows: nine amplified channels, eleven processing channels, four subwoofer pre-outs, Dolby Atmos, DTS:X, Auro-3D and IMAX Enhanced.
The Marantz row states four figures our Denon row does not record at all — Audyssey MultEQ XT32, a 4–16Ω impedance range, a 40 Gbps HDMI bandwidth figure and an eARC port count — and adds a third HDMI output where the Denon states two.
It runs the other way exactly once: the Denon states VRR passthrough and a 135W 6Ω figure, and neither appears on the Cinema 50's row.
Provenance honesty: the 40 Gbps HDMI figure on the Marantz row is retailer-sourced, not manufacturer-stated — the one number on this page we would confirm before buying for a 4K/120 console, at $1,849 vs $2,000 in the price row above.
