Buy the Denon AVR-X3800H for any modern, growing system — nine channels, four subs, a 40 Gbps-class curated HDMI spec, and a 4–16Ω rating, all stated. Buy the NAD T 758 V3i for Dirac Live and the catalog's most honest amp spec (60W, ALL channels driven, 0.05% THD) — accepting a stated 8Ω floor and an 18 Gbps HDMI board.
As tracked by Home Theater Builder: the NAD T 758 V3i tracks at $2,299; the Denon AVR-X3800H at $1,399.How we verify this data →
The NAD T 758 V3i carries the most honestly-rated amplifier section in our AVR catalog — and some of its oldest digital plumbing. Against the X3800H, both halves of that sentence matter.
Specifications · side by side · per-field provenance
● SOURCE-TRACKED
Spec
NAD T 758 V3i
Denon AVR-X3800H
Price
$2,299
$1,399
Brand
NAD
Denon
Main channels
7
9
Processing channels
11
11
Zone 2 capable
Yes
Yes
Watts per channel (8 Ω)
110
105
Channels driven (power rating)
unstated
two channels driven
Impedance range
8 ohms to 16 ohms
4-16 Ω/ohms
Speaker impedance, min (Ω)
8
4
Speaker impedance, max (Ω)
16
16
Room correction system
Dirac Live (full bandwidth)
Audyssey MultEQ XT32
HDMI version
2.0
2.1
HDMI max bandwidth (Gbps)
18
40
HDMI eARC ports
0
1
Weight (lbs)
33.9
16.8
Channel configuration
not stated
9.4
Subwoofer pre-outs
not stated
4
Height channels
not stated
4
Zone 3 capable
not stated
No
Watts per channel (6 Ω)
not stated
135
THD (%)
not stated
0.08
Dolby Atmos
not stated
Yes
DTS:X
not stated
Yes
Auro-3D
not stated
Yes
IMAX Enhanced
not stated
Yes
Measurement mic included
not stated
Yes
HDMI inputs
not stated
6
HDMI outputs
not stated
3
HDMI 2.1 ports
not stated
6
Max passthrough resolution
not stated
8K 60
HDR support
not stated
HDR, HLG, Dolby Vision, HDR10+, Dynamic HDR
VRR passthrough
not stated
Yes
ALLM passthrough
not stated
Yes
Phono input
not stated
Yes
Wi-Fi
not stated
Yes
Bluetooth
not stated
Yes
AirPlay 2
not stated
Yes
HEOS
not stated
Yes
Alexa built-in
not stated
Yes
IP control
not stated
Yes
Streaming services
not stated
TuneIn, Spotify Connect, Pandora, Qobuz
12 V trigger outputs
not stated
1
Form factor
not stated
full size
Width (in)
not stated
17.1
Height (in)
not stated
6.6
Depth (in)
not stated
14.9
Power consumption (W)
not stated
660
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
NAD publishes a 60W rating with ALL channels driven at 0.05% THD — the strictest measurement context of any receiver we track, alongside a 110W into-8Ω line. Denon's 105W is 8Ω with two channels driven at 0.08%. An all-channels figure reads far lower than a two-channel figure from a comparable amplifier, so NAD's 60 and Denon's 105 are closer than they look — the point of storing the context. The rest of the NAD sheet is franker still: a stated 8–16Ω impedance range (NOT rated for 4Ω loads — the narrowest floor here), Dirac Live correction, and a curated HDMI 2.0 board at 18 Gbps against the Denon's curated 40. The Denon amplifies nine channels to the NAD's seven and states four independent sub outs.
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 NAD T 758 V3i drive the KEF LS50 Meta?
NAD T 758 V3i states a 8Ω-minimum rating, and the KEF LS50 Meta dips to a stated 3.5Ω minimum — well below that floor. By its own published spec this receiver is not rated for a load like this.
Can the Denon AVR-X3800H drive the KEF LS50 Meta?
Denon AVR-X3800H 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.
Gaming & connectivity · answered from the spec sheets
Can the NAD T 758 V3i and Denon AVR-X3800H pass 4K/120 through?
The NAD T 758 V3i states 18 Gbps HDMI bandwidth, below the ~40 Gbps full 4K/120 needs; the Denon AVR-X3800H states 40 Gbps HDMI bandwidth — enough for full 4K/120.
The verdict
Buy the Denon AVR-X3800H for any modern, growing system — nine channels, four subs, a 40 Gbps-class curated HDMI spec, and a 4–16Ω rating, all stated. Buy the NAD T 758 V3i for Dirac Live and the catalog's most honest amp spec (60W, ALL channels driven, 0.05% THD) — accepting a stated 8Ω floor and an 18 Gbps HDMI board.
The strictest power rating we track: NAD states 60W with ALL channels driven at 0.05% THD (plus a 110W 8Ω line) — an FTC-style figure that makes big two-channel stickers look inflated, preserved with its context in our data.
The NAD states an 8–16Ω impedance range — by its own sheet NOT rated for 4Ω-class speakers; the Denon states 4–16Ω.
Curated HDMI generations a spec table rarely admits: 18 Gbps HDMI 2.0 (NAD) vs 40 Gbps (Denon).
Correction fork, stated: Dirac Live vs Audyssey MultEQ XT32; channel topology 7/11-processing vs 9/11 with 4 independent sub outs.
