Identical on every performance field we record — 140W at the same strict context, 11 amplified/13 processing channels, four subs, XT32 on both. Buy the Denon AVR-X6800H if the live prices favor it, the Marantz CINEMA 30 for its stated trigger/Roon extras and the design — the data itself can't split them, and we say so.
As tracked by Home Theater Builder: the Marantz CINEMA 30 tracks at $8,800; the Denon AVR-X6800H at $3,799.How we verify this data →
The top of both sibling ranges: eleven amplified channels each, and once again the amplifier ratings are identical to the watt under the identical context.
Specifications · side by side · per-field provenance
● SOURCE-TRACKED
Spec
Marantz CINEMA 30
Denon AVR-X6800H
Price
$8,800
$3,799
Brand
Marantz
Denon
Main channels
11
11
Processing channels
13
13
Subwoofer pre-outs
4
4
Zone 2 capable
Yes
Yes
Zone 3 capable
Yes
Yes
Watts per channel (8 Ω)
140
140
THD (%)
0.05
0.05
Channels driven (power rating)
two channels driven
two channels driven
Impedance range
4 – 16 Ω/ohms
4 – 16 Ω/ohms
Speaker impedance, min (Ω)
4
4
Speaker impedance, max (Ω)
16
16
Dolby Atmos
Yes
Yes
DTS:X
Yes
Yes
Auro-3D
Yes
Yes
IMAX Enhanced
Yes
Yes
Room correction system
Audyssey MultEQ XT32
Audyssey MultEQ XT32
Measurement mic included
Yes
Yes
HDMI inputs
7
7
HDMI outputs
3
3
HDMI version
2.1
not stated
HDMI max bandwidth (Gbps)
40
40
HDMI eARC ports
1
1
Max passthrough resolution
8K 60
not stated
HDR support
HDR10, HLG, Dolby Vision, HDR10+
HLG, HDR, Dolby Vision, HDR10+, Dynamic HDR
VRR passthrough
Yes
Yes
ALLM passthrough
Yes
Yes
Phono input
Yes
Yes
Wi-Fi
Yes
not stated
Bluetooth
Yes
not stated
AirPlay 2
Yes
not stated
HEOS
Yes
Yes
IP control
Yes
not stated
Streaming services
Spotify Connect, TuneIn, Pandora, Amazon Music HD, Deezer
not stated
12 V trigger outputs
3
not stated
Form factor
full size
full size
Width (in)
17.4
17.1
Height (in)
7.5
6.6
Depth (in)
17.6
14.9
Weight (lbs)
42.8
34.4
Power consumption (W)
780
750
Channel configuration
not stated
11.4
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
Both state 140W at 8Ω, two channels driven, 0.05% THD — 0.0 dB apart. Both drive eleven channels, process thirteen, feed four independent subwoofer outputs through Audyssey MultEQ XT32, state 4–16Ω ratings, run seven HDMI inputs and three outputs, and add a third zone. The stated differences we record: the Marantz states three trigger outputs and Roon Tested certification, and its stated chassis is nearly an inch taller and some 8 lbs heavier — build mass the sheet admits, whatever one makes of it.
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 Marantz CINEMA 30 drive the KEF LS50 Meta?
Marantz CINEMA 30 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.
Identical on every performance field we record — 140W at the same strict context, 11 amplified/13 processing channels, four subs, XT32 on both. Buy the Denon AVR-X6800H if the live prices favor it, the Marantz CINEMA 30 for its stated trigger/Roon extras and the design — the data itself can't split them, and we say so.
0.0 dB, verified: both flagships state 140W at 8Ω / two channels driven / 0.05% THD — identical number, identical context, stored with both values.
Both power 11 channels and process 13, with 4 independent sub pre-outs and XT32 — full 7.x.4-from-one-box parity in stated fields.
The recorded asymmetries: Marantz states 3 trigger outputs, Roon Tested, and a stated 42.8 lb chassis vs the Denon's 34.4 — mass and plumbing, not performance claims.
