The Onkyo TX-8270 is a pre-top model in the company’s line of two-channel receivers, and it is distinguished not only by good power efficiency, traditional for Onkyo components, but also by a complete set of tools for integration into the most modern stereo system.
Let’s start with power – the receiver is capable of delivering up to 160 watts per channel at a load of 6 ohms. Unlike its cinema counterparts, the device does not need to consume current to service the central and rear channels, so there is no doubt that it will have enough energy to drive floor-standing speakers when operating in stereo. In addition, Onkyo engineers have always been famous for their serious approach to designing power supplies for their equipment.
However, in addition to the power amplifier section, we are also interested in the functional equipment of the TX-8270; is it capable of becoming the heart of a modern audio system? After all, the main role of the receiver is to bring together and distribute audio and video signals in such a way as to ensure maximum ease of control. From this point of view, the device has everything you need, and even more. Let’s start with the digital part.
A DAC built on an AK4438 chip from Asahi Kasei, theoretically capable of supporting 32-bit/384 kHz PCM signals, is responsible for processing and converting incoming signals. And although the receiver is more focused on music playback, the presence of a separate output for low-frequency effects with an adjustable cutoff frequency allows you to provide, if desired, additional pressure in the bass range when watching a movie by connecting a good subwoofer.
The wireless and network capabilities of the receiver are almost limitless. It can connect to the network via either wired Ethernet or Wi-Fi; it also supports Bluetooth version 4.1 for connecting to smartphones, tablets and PCs. Built-in music services include Tidal, Spotify, Deezer and TuneIn. Multiroom capabilities are represented by the proprietary FlareConnect protocol, AirPlay, as well as universal DTS Play-Fi.
In terms of supported audio file formats, the device is capable of handling signals up to 24-bit/192 kHz and DSD 5.6 MHz, provided they are supplied via a network or USB input. In general, the set of digital and analog inputs on the Onkyo TX-8270 is quite comprehensive – two optical, coaxial, three linear on RCA, as well as an input to an MM phono preamplifier. Well, the main advantage of the model is, of course, the presence of 4 HDMI ARC inputs with support for 4K, HDR10 and Dolby Vision.
For fans of traditional radio, we note that the receiver is equipped with an analog FM tuner, as well as a digital DAB/DAB+ module. You can control the device using either the included remote control or the proprietary Onkyo Controller mobile application. In general, listing all the advantages and capabilities of the Onkyo TX-8270 could take several pages, and we still need to find out how capable it is of replacing an integrated amplifier of equal class.
Onkyo TX-8270 Specifications
Output power 160 W per channel (6 Ohms, 1 kHz, 1% THD, 1 channel loaded, IEC), 170 W per channel (6 Ohms, 1 kHz, 10% THD, 1 channel loaded, JEITA) , 100 W per channel (8 ohms, 20 Hz – 20 kHz, 0.08% THD, 2 channels loaded, FTC)
Dynamic power 2 x 240 W (3 ohms), 2 x 210 W (4 ohms), 2 x 120 W (8 ohms)
Harmonic distortion 0.08% (20 Hz – 20 kHz, at half power)
Frequency response 10 Hz – 100 kHz (+ 1 dB, – 3 dB, Direct mode)
Damping factor 54
Input sensitivity/impedance 200 mV /47 kOhm (line input), 3.5 mV / 47 kOhm (MM phono stage)
Nominal output voltage/impedance 1 V / 470 Ohm (subwoofer output)
Bass tone: ± 10 dB (90 Hz), Treble: ± 10 dB (7.5 kHz)
Signal-to-noise ratio 106 dB (line input), 80 dB (MM phono stage)
Speaker impedance 4-16/6-16 Ohms (A or B); 8 – 16 ohms (A + B)
Headphone output impedance 330 ohms
Built-in headphone amplifier power 80 mW (32 ohms, 1 kHz, 10%)
Wi-Fi IEEE 802.11 a/b/g/n, 2.4/5 GHz
Bluetooth version 4.1 + LE (A2DP v1.2, AVRCP v1.3)
AirPlay support yes
Chromecast and DTS Play-Fi support yes, software update required
FireConnect wireless technology support for multiroom installation yes, sampling rates 44.1 and 48 supported kHz, software update required
Direct mode disables tone control
Pure Audio mode disables display and analog video circuits
Double Bass boost function yes
FM tuner yes
Number of presets 40
Display brightness adjustment yes
Asahi Kasei AK4438 DAC (32 bit/384 kHz)
VLSC filter suppresses pulse noise and interference in the UHF region
DLNA protocol supported
Enhancer for compressed audio files Music Optimizer
Optimum Gain Volume Circuitry circuit for optimal gain control, minimizes noise
Supported audio file formats over LAN over a wired connection MP3, WMA, WMA Lossless, FLAC (24 bit/192 kHz ), WAV (24 bit/192 kHz), AAC, Apple Lossless (24 bit/96 kHz), AIFF (24 bit/192 kHz), DSD (5.6 MHz, PCM conversion), LPCM
Supported audio file formats via USB FLAC, WAV, ALAC, DSD, AIFF, WMA Lossless, MP3 and AAC
Supported Internet services TuneIn, Spotify Connect, TIDAL, Deezer
Control via Onkyo Controller app for iOS and Android devices yes
IP control when connected via LAN port supported
Number of additional zones 1
Inputs 4 x HDMI 2.0a (HDCP 2.2, 4K (60 Hz), 3D, HDR, Dolby Vision, etc.), 3 line RCA, MM phono input (RCA), 2 optical (24 bit/96 kHz), coaxial (24 bit/96 kHz), 2 x USB ports for external storage and for powering external devices (front panel: 5 V/1 A; rear panel: 5 V/500 mA), Ethernet port (LAN)
HDMI 2.0a outputs (with ARC), 6.3 mm for headphones, Line Out (RCA) for zone 2, 2 Pre Out (RCA) for subwoofer
Other connections system bus RI connector, IR input, IR output, 2 jacks for Bluetooth/Wi-Fi antennas, FM jack /DAB antenna, ground terminal
Output terminals for speakers 4 pairs of screw terminals
Power supply powerful W-shaped transformer, audio-grade capacitors
Power consumption 260 W, standby: 0.15 W
Remote control RC-903S
Dimensions (WxHxD) 435x150x329 mm
Weight 8.7 kg
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