Onkyo TX-RZ30 9.2-Channel AV Receiver
- 9.2 channel receiver, 100 watts per channel
- Dirac Live Full Bandwidth room correction included, multi-bass upgrade optional
- 8 HDMI ports, supports Dolby Atmos, Dolby Vision and IMAX Enhanced
- Works with Sonos port for wireless distribution
- 21 by 18.3 by 10.6 inch chassis, about 29.3 lb
- 2 year warranty
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A high channel-count receiver built for a full surround room with strong calibration tools, though the more advanced bass correction is a separate paid upgrade.
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ASIN: B0D81HV832Model: TX-RZ30Category: AV Receivers
Overview
Building a nine-speaker surround layout is the point of this receiver, with enough channels and power for a dedicated home theater room. Dirac Live room correction ships included to calibrate the full frequency range automatically, and IMAX Enhanced and Dolby Atmos handle object-based audio and video formats.
Nine amplified channels give a full surround layout room to grow without adding a second receiver, and Dirac Live handles the room calibration work most owners would otherwise skip. The included correction only covers the full frequency band, so anyone wanting separate bass control across multiple subwoofers needs to pay for that upgrade separately.
Who it's for
Someone assembling a dedicated theater room with height and surround channels benefits from the channel count and included Dirac calibration here. A buyer who only needs a basic stereo or 5.1 setup does not need this many channels or this much power.
Pros and cons
- Nine amplified channels for a full surround layout
- Dirac Live full bandwidth correction included
- Works with Sonos port for wireless distribution
- Supports Dolby Atmos, Dolby Vision and IMAX Enhanced
- Multi-subwoofer bass correction sold as a separate upgrade
- Large and heavy chassis needs a sizable equipment shelf
Performance notes
Nine independent amplifier channels distribute power across front, center, surround and height speakers rather than routing everything through fewer shared channels. Dirac Live measures the room's frequency response and corrects it across the full bandwidth automatically, while the optional bass control add-on would extend that correction across multiple subwoofers individually. Object-based formats like Dolby Atmos and IMAX Enhanced place sound based on channel and height data rather than a fixed surround pattern.
Specifications
| Brand | Onkyo |
|---|---|
| Model | TX-RZ30 |
| Power | 100 wattslower than 64% of 40 av receivers |
| Connectivity | Bluetooth |
| Hdmi Ports | 8 |
| Brand Tech | Onkyo |
| Weight | 29.3 poundshigher than 88% of 43 av receivers |
Closest rivals on specs
Yamaha RX-V679BL 7.2 Channel MusicCast Receiver- Power 100 vs 150 watts (-33%)
- Weight 29.3 vs 26 pounds (+13%)
Yamaha RX-V4A 5.2-Channel AV Receiver- Power 100 vs 80 watts (+25%)
- Weight 29.3 vs 24.5 pounds (+20%)
NAD T758 V3i 7.1 Channel AV Receiver- Power 100 vs 60 watts (+67%)
- Weight 29.3 vs 33.9 pounds (-14%)
Frequently asked questions
Can this receiver dedicate channels to ceiling height speakers?
Yes, with nine amplified channels available it can run a standard 7.2 layout and still dedicate two channels to ceiling or height speakers for Atmos or IMAX Enhanced content.
Does it work with Klipsch Reference Premiere speakers?
Yes, Klipsch Optimize Mode applies crossover values tuned to specific Reference Premiere models for easier integration.
Do I need to buy anything extra for full Dirac correction?
The Full Bandwidth Dirac Live license is included, but correcting bass separately across multiple subwoofers requires a separate paid Single or Multi Bass Control upgrade.
Will it work in a room already wired for 5.1 sound?
Yes, it can run a basic 5.1 setup using only the channels needed, leaving the extra channels unused until more speakers are added later.