
Onkyo TX-NR6100
Score: 82/100
Denon AVR-X1800H
Score: 76/100Rankings

The Onkyo TX-NR6100 is a THX-certified 7.2-channel receiver with 8K/60 Hz HDMI 2.1, VRR, ALLM and robust 100 W per channel output for gaming and home-theater use. Its limited warranty, lack of eARC and sizable footprint may be drawbacks for some users. It fits well for gamers and movie lovers seeking THX-grade performance.

The Denon AVR-X1800H is a 7.2-channel receiver delivering 80 W per channel, HDMI 2.1 8K/60 Hz video and comprehensive HEOS streaming. Its power ceiling and limited Zone 2 amplification are trade-offs for the budget-friendly feature set. Suited for small-to-medium rooms, gamers and users who prioritize streaming integration.
| Attribute | ![]() | ![]() |
|---|---|---|
3 | 6best | |
1best | 1best | |
100 Wbest | 80 W | |
| ↓ lower better | 635 Wbest | — |
| ↓ lower better | 0.1 Wbest | — |
2 yearsbest | 2 yearsbest | |
| ↓ lower better | 473.5 mm | 434.34 mmbest |
| ↓ lower better | 270.3 mm | 152.4 mmbest |
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| Attribute | ![]() | ![]() |
|---|---|---|
Ports(1) | ||
HDMI Inputs | 3 | 6 |
Audio(1) | ||
Supported Audio Formats | FLAC, ALAC, DSD, MP3, WMA, AAC | FLAC; ALAC; WAV; DSD |
Power(1) | ||
Power Output (per channel, 8 Ω) (W) | 100 W | 80 W |
Connectivity(1) | ||
Bluetooth Version | Bluetooth | unspecified |
Features(1) | ||
Video Support (e.g., 4K/8K) | 8K/60Hz,4K/120Hz,HDR | 8K/60Hz; 4K/120Hz; HDR10; HDR10+; Dolby Vision; HLG |
Build & Design(4) | ||
Width (mm) | 473.5 mm | 434.34 mm |
Height (mm) | 270.3 mm | 152.4 mm |
Depth (mm) | 533.4 mm | 337.82 mm |
Weight (kg) | 10.41 kg | 10.45 kg |


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Professional sources commend the TX-NR6100 for its THX certification, which ensures precise, theater-grade sound, and for its HDMI 2.1 implementation that provides 8K video and gaming-ready features. Reviewers also highlight the flexible powered Zone 2, robust 100 W per channel output, and AccuReflex height-virtualization as key strengths that make it a centerpiece for premium home entertainment.
Consumers repeatedly praise the receiver's straightforward setup process, the breadth of connectivity options, and the ability to stream high-resolution music throughout the house via HEOS. The remote and voice-assistant integration are also frequently mentioned as convenient features.

Professional reviewers commend the AVR-X1800H for its future-ready HDMI 2.1 implementation, robust Audyssey calibration, and the convenience of the HEOS ecosystem, while noting that its 80 W per channel rating can be limiting in full-7-channel operation and that HDMI input flexibility is modest compared with some rivals.
Everyday owners praise the easy wireless streaming, versatile inputs including a phono stage, and the ability to add height virtualization without extra speakers, but they commonly cite the need for an external amp for Zone 2 wired speakers and express concerns about limited power for larger rooms.