Building a multichannel home theater system without a specialist budget is precisely the territory of entry-level AV receivers. This one decodes Dolby Atmos and DTS:X, drives up to seven speakers and two subwoofers, and passes a 4K HDR picture through to the TV. Enough to move from a living room equipped with a soundbar to a complete surround setup, with room to expand it later.
Seven channels, several possible configurations
Seven amplification channels are the starting point of what the TX-SR494 can do, and above all of the freedom it offers in speaker placement. Two main layouts are possible. The first remains in the horizontal plane: two front speakers, one center speaker, two side speakers and two rear speakers, for a 7.2 configuration in which sound moves around the sofa. The second reallocates the last pair upward, to ceiling speakers or modules placed on top of the front speakers, for a 5.1.2 setup (five floor-level speakers, one or two subwoofers, two height channels).
This second option adds the vertical dimension. Dolby Atmos and DTS:X no longer distribute sound through fixed channels but through objects: a helicopter, a downpour or a voice is assigned a precise position in space, which the AV receiver sends to the nearest speaker, including those above listeners’ heads. The two dedicated subwoofer outputs help balance bass in the room, or power two subwoofers for more even low frequencies from one listening position to another.
Understanding the stated wattage
The power figures require a little interpretation, as they can easily be misleading. The 160 W per channel figure corresponds to a measurement on a single channel, at 1 kHz, with 10% distortion, a level at which the signal is already noticeably degraded. The 135 W value, measured according to the IEC standard at 1% distortion, is also obtained on an isolated channel. In real-world operation, with five to seven speakers driven together across the full frequency range, power per channel falls below these figures.
That is not disqualifying, however. In a living room, with speakers of typical sensitivity, the available headroom allows comfortable listening levels, including the peaks of an action soundtrack. The AV receiver accepts 4 to 16 ohm speakers, covering almost the entire market, and its 109 dB signal-to-noise ratio keeps background hiss at bay.
4K HDR picture through to the TV
Placed between the sources (Blu-ray player, console, set-top box) and the TV, the TX-SR494 relays the picture without altering it. It passes 4K at 60 frames per second and supports common HDR formats, Dolby Vision, HDR10 and HLG, with the extended BT.2020 color space and 4:4:4 chroma sampling that preserves color accuracy. HDCP 2.2 compatibility enables playback of protected 4K content, including UHD Blu-rays and video streaming services.
Four HDMI inputs accept sources, while one output connects to the TV. This output supports ARC (Audio Return Channel): audio from TV apps returns to the AV receiver through the HDMI cable already in place, with no separate audio connection required. An internal converter can upscale a 1080p picture to 4K resolution. The video section stops at the HDMI 2.0 standard: 4K at 120 frames per second and 8K bandwidths are not supported, a choice consistent with its home theater purpose and the TVs most commonly paired with it.
Audio decoding and music listening
Music is not relegated to the background. An AKM converter, capable of processing files up to 32-bit and 384 kHz, supports high-resolution recordings and SACD playback via HDMI. Direct mode sets aside unnecessary processing to stay as close as possible to the original signal, while Advanced Music Optimizer instead attempts to restore some of the detail lost through highly compressed files and Bluetooth.
Dolby TrueHD and DTS-HD Master Audio soundtracks are decoded without further compression, at disc-quality level. Without ceiling speakers, Dolby Atmos Height Virtualizer and DTS Virtual:X recreate some of the height and surround effects using only the speakers already in place. Dolby Surround and DTS Neural:X upmixers, meanwhile, spread a stereo or 5.1 source across all connected speakers. Tone adjustment and the Vocal Enhancer function, which raises dialogue levels when they get lost in the action, complete the feature set.
Automatic system calibration
The success of a multichannel system depends heavily on speaker setup, a step that often discourages users before they get started. The TX-SR494 comes with a microphone and the AccuEQ system: placed at the listening position, the microphone captures a series of test tones, and the AV receiver determines the distance, level and response of each speaker, then corrects the differences. This version also calibrates subwoofer volume, a point that adjustment by ear regularly misses.
The rest is designed for simplicity. A connection guide printed on the rear panel identifies each terminal, direct power-on turns the system back on using the last source selected, and a sleep timer switches everything off after a chosen delay. In standby, power consumption drops to 0.2 W.
Connections and wireless streaming
Wireless connectivity relies on Bluetooth, which receives music from a phone, tablet or computer. The TX-SR494 does without Wi-Fi and network playback: no built-in Spotify, TIDAL or Qobuz, and no multiroom function. To listen to a streaming service, Bluetooth remains the option, or an external source connected to one of the inputs.
The rest of the connectivity covers everyday uses: optical and coaxial digital inputs for a TV or console, three analog stereo inputs, a 6.35 mm front headphone jack and a preamplified line output for a second stereo zone, listened to alongside the main system. An AM/FM tuner with RDS and forty presets, plus a powered USB port on the rear, complete the package. The front speakers connect to screw terminals, while the others use spring-clip connectors.
