Introduction
In a world dominated by complex multi-channel home theater systems and compact soundbars, the pure, unadulterated joy of two-channel stereo listening is making a massive comeback. Many music lovers are realizing that you do not need seven, nine, or eleven speakers cluttering your living room to achieve breathtaking, immersive sound. Instead, focusing your budget on a high-quality two-channel setup often yields far better audio fidelity, cleaner power, and a more intimate connection to your favorite tracks.
Enter the Onkyo TX-8470 2 Channel Stereo Receiver. Designed by and for passionate audiophiles, this network stereo receiver bridges the gap between traditional high-fidelity analog warmth and modern digital convenience. It promises to deliver a refined listening experience whether you are spinning vintage vinyl, streaming lossless audio from high-resolution platforms, or routing your TV audio through a pair of premium loudspeakers.
With an attractive current price of around $502 on Amazon—marked down significantly from its original launch price—and backed by 75 customer reviews, the TX-8470 stands out as an incredibly compelling option in the mid-range audio market. In this comprehensive review, we will dive deep into its design, technical specifications, real-world performance, pros, cons, and customer feedback to help you decide if this receiver is the right centerpiece for your home entertainment ecosystem.
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Product Overview
The Onkyo TX-8470 is a sophisticated two-channel network receiver that packs a surprising amount of modern technology into a classic, retro-inspired chassis. At its core, the TX-8470 is built around a high-current Class G amplifier. This amplification style is a crucial highlight: it operates like a standard Class AB amplifier but utilizes a smart, dual-rail power supply. Under low-demand conditions, it runs on a lower voltage rail to conserve energy and minimize heat. When you crank up the volume and the music demands sudden dynamic peaks, it seamlessly switches to a higher voltage rail to deliver clean, effortless power. The result is a highly efficient design that runs exceptionally cool while retaining the warm, organic, and dynamic character of analog amplification.
Onkyo rates the TX-8470 at 110 watts per channel into 8 ohms (at 20-20,000 Hz, with 0.08% Total Harmonic Distortion, driving 2 channels). This is a conservative rating that ensures the receiver has plenty of headroom to drive everything from sensitive bookshelf speakers to demanding floor-standing towers.
Design and Build Quality
Visually, the TX-8470 pays homage to the golden age of hi-fi. The front panel features a clean, professional aesthetic with an easy-to-read LED display sporting Onkyo’s signature green segments. It features a large, satisfying volume dial, an input selector, and physical tone control knobs (Bass, Treble, and Balance). This layout provides an excellent tactile experience, allowing you to fine-tune your sound without constantly digging through on-screen menus or smartphone apps.
The rear panel is where the modern magic happens. Unlike traditional stereo receivers of the past, the TX-8470 features four HDMI inputs and one HDMI ARC output, all supporting 8K video resolution at up to 40Gbps. This makes it an incredibly TV-friendly stereo receiver. It allows you to connect a gaming console, streaming box, and Blu-ray player directly to the receiver, routing high-quality two-channel audio to your speakers while sending pristine video up to your television.
For vinyl enthusiasts, Onkyo went the extra mile. Rather than tossing in a cheap, generic phono stage as an afterthought, they engineered an isolated, patent-pending discrete op-amp circuitry board. This dedicated board supports both Moving Magnet (MM) and Moving Coil (MC) cartridges, powered by an isolated linear analog power supply to keep delicate turntable signals completely safe from digital interference.
Under the Hood: Key Specifications
- Channels: 2.0 Stereo
- Power Output: 110W per channel into 8 ohms (20-20k Hz, 0.08% THD)
- Amplifier Class: Class G
- Digital-to-Analog Converter (DAC): Premium 32-bit/768kHz AKM (AK4452)
- HDMI Connectivity: 4 Inputs / 1 Output (with Audio Return Channel – ARC)
- Video Support: 8K/60Hz, 4K/120Hz, HDR10+, Dolby Vision compatibility, VRR, ALLM
- Phono Input: Switchable MM / MC with isolated circuitry
- Wireless Connectivity: Dual-band Wi-Fi, Bluetooth, Apple AirPlay 2, Chromecast built-in
- Streaming Integration: Roon Ready, Spotify Connect, Tidal, Deezer, Amazon Music, TuneIn
- Speaker Outputs: A and B speaker terminals (gold-plated)
- Subwoofer Output: Dedicated mono RCA output
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Pros
The Onkyo TX-8470 is packed with features that make it a standout performer. After analyzing its technical design and real-world performance, here are the primary advantages of this network stereo receiver:
Exceptional Class G Amplification
The implementation of Class G amplification is a massive win for audio quality. Because it dynamically switches voltage rails depending on the output demand, you get the warm, rich, and detailed sound signature of traditional Class A or AB designs but without the massive heat generation or high power bills. The receiver runs remarkably cool even during extended, high-volume listening sessions. With 110 watts per channel, it delivers effortless dynamics, a wide soundstage, and highly precise instrument separation.
Built-In Audiophile-Grade AKM DAC
Digital music lovers will appreciate the inclusion of the premium Asahi Kasei Microdevices (AKM) AK4452 DAC. This 32-bit/768kHz digital-to-analog converter is highly regarded in audiophile circles for its “velvet sound” signature—delivering incredibly smooth high frequencies and a natural, non-fatiguing mid-range. It processes high-resolution audio files (including DSD up to 11.2 MHz) with stunning clarity, breathing new life into your digital library.
True Support for Both MM and MC Turntables
While almost all modern stereo receivers feature a phono input, they are almost exclusively limited to Moving Magnet (MM) cartridges. The Onkyo TX-8470 features a switchable phono preamp that fully supports Moving Coil (MC) cartridges as well. This isolated board is designed to shield the ultra-sensitive phono signals from the high-frequency digital noise generated by the receiver’s Wi-Fi and HDMI circuits, ensuring a dead-silent, warm, and highly engaging vinyl listening experience.
TV-Friendly HDMI 2.1 Hub with ARC
For many households, the stereo system must pull double duty as a TV sound system. The TX-8470 excels here by offering four HDMI 2.1 inputs and an HDMI ARC output. You can hook up your gaming consoles and streaming devices, enjoy 8K/60Hz or 4K/120Hz video pass-through with low lag features (VRR and ALLM), and control the receiver’s volume using your television’s remote control. It provides the simplicity of a soundbar with the glorious audio performance of high-end stereo speakers.
Seamless Smart Home and Wireless Streaming
Whether you use Apple AirPlay 2, Google Chromecast, or Bluetooth, sending music from your phone to the TX-8470 is remarkably simple. Furthermore, it is officially Roon Ready, meaning it integrates flawlessly with Roon’s premium music management platform. It also works seamlessly within the Sonos ecosystem and supports direct streaming from Spotify, Tidal, Deezer, and Amazon Music.
Versatile Speaker Switching and Subwoofer Integration
With gold-plated A/B speaker terminals, you can easily connect two different pairs of speakers. This is perfect if you want to switch between critical-listening bookshelf speakers and party-oriented floor-standers, or run speaker wire to a second room. Additionally, the dedicated mono subwoofer output allows you to easily integrate a powered subwoofer to fill out the low-end frequencies.
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Cons
No audio component is absolutely perfect, and the Onkyo TX-8470 does have a few drawbacks that potential buyers should keep in mind before making a purchase:
No Native Dolby Digital or DTS Decoding
Because this is strictly a 2-channel stereo receiver, it does not contain onboard multi-channel surround sound decoders like Dolby Digital or DTS. When connecting your TV via HDMI, you must go into your TV’s audio settings and manually set the digital output to “2-Channel PCM”. If you forget to do this, you may hear silence or static when playing certain movies or TV shows.
Non-Intuitive Setup and Mobile App Experience
While the hardware itself is stellar, several users have pointed out that the initial network setup, Bluetooth pairing, and the Onkyo Controller App can be frustrating. The app feels somewhat dated and is not as intuitive or polished as competitors like Sonos or BluOS. Fortunately, once the receiver is connected to your network, you can bypass the Onkyo app entirely and stream directly using AirPlay, Chromecast, or Spotify/Tidal Connect.
Lower Gain on the MC Phono Stage
While having a Moving Coil (MC) phono stage at this price point is a huge bonus, laboratory measurements show that the MC circuit has a relatively low signal-to-noise ratio (around 55 dB). This means that if you are using an ultra-low-output MC cartridge, you may need to turn the volume up significantly, which can introduce a very faint background hiss. It works beautifully with standard MC cartridges, but hard-core vinyl enthusiasts with exotic, low-output cartridges may still prefer an outboard phono preamp.
High Output Impedance on the Headphone Jack
The front-panel 1/4″ headphone jack is a nice inclusion, but it features a very high output impedance of 320 ohms. While this is excellent for driving demanding, high-impedance audiophile headphones (like the Sennheiser HD600 series), it is not ideal for low-impedance headphones or sensitive In-Ear Monitors (IEMs). Low-impedance headphones plugged into this jack may experience a altered frequency response and bloated bass.
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Customer Reviews Analysis
With an average rating of approximately 4.5 out of 5 stars across 75 reviews, the customer consensus for the Onkyo TX-8470 is overwhelmingly positive. Buyers frequently express delight at the sheer sound quality, describing the audio output as incredibly “clean, crisp, and powerful with smooth bass”.
Many reviewers note that the 110-watt rating feels very conservative. Several users paired the receiver with power-hungry floor-standing speakers and reported that they rarely need to turn the volume past 40% to achieve loud, room-filling sound. The integration of HDMI inputs on a stereo receiver is also widely celebrated, with several buyers stating it is the absolute perfect solution for simplifying their living room setup without needing a massive, complicated AV receiver.
On the critical side, the most common complaints focus on the initial setup process. Some users had difficulty getting the Bluetooth or Wi-Fi to pair on the first try, blaming Onkyo’s companion mobile app for being clunky. Another small quirk mentioned by a few buyers is the volume taper: the receiver uses a highly gradual volume scale, meaning you may have to turn the dial up to about 40% before you get moderate listening levels. However, users confirm that once you push past that threshold, the power delivery is robust and linear.
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Who Should Buy This Product?
The Onkyo TX-8470 is a highly specialized piece of gear that excels in specific scenarios. You should consider buying this receiver if:
- You want pristine TV sound without a multi-speaker setup: If you love watching movies and playing games but do not want a complex 5.1 surround sound system or a cheap-sounding soundbar, the TX-8470’s 8K HDMI switching and ARC capability make it the ultimate 2-channel living room hub.
- You are a vinyl enthusiast: Whether you own a standard Moving Magnet turntable or are planning to upgrade to a high-end Moving Coil cartridge, the isolated, dedicated phono board on this receiver delivers incredible analog warmth and detail.
- You stream high-resolution digital audio: If you use services like Tidal, Qobuz, or are a Roon subscriber, the built-in AKM 32-bit/768kHz DAC will extract every ounce of detail from your high-res digital files.
- You want a cool-running, power-efficient system: Thanks to its Class G design, this receiver delivers muscular, dynamic power while remaining cool to the touch, making it safe to use inside media cabinets or tighter shelf spaces.
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Final Verdict
Onkyo has hit an absolute home run with the TX-8470 Network Stereo Receiver. By focusing their engineering budget on optimizing just two channels rather than spreading it thin across five or seven, they have delivered an incredibly clean, dynamic, and refined sounding amplifier that punches well above its weight class.
While the companion app setup can be slightly clunky and the lack of native Dolby/DTS decoding requires a quick settings adjustment on your TV, these minor drawbacks are easily overshadowed by the sheer musicality and versatile connectivity of the unit. You get high-current Class G amplification, an audiophile-grade AKM DAC, an isolated MM/MC phono stage, 8K HDMI switching, and extensive streaming capabilities all in one sleek package.
At its current price of $502, the Onkyo TX-8470 represents an extraordinary value. If you are looking to build a high-performance, modern stereo system that honors the rich legacy of analog audio while embracing the future of digital streaming, this receiver deserves to be at the top of your shortlist.
