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A/V Receivers & Preamp/Processors

Onkyo’s TX-SR3100 5.2-channel A/V Receiver Supports 8K, Dolby Atmos and DTS:X for Only $399

Choose this budget-priced Dolby Atmos A/V Receiver for smaller rooms that have limited space for a maximum of five speakers.

Onkyo TX-SR3100 A/V Receiver Front Angle

Onkyo today announced an affordable 5.2-channel A/V Receiver for only $399. The Onkyo TX-SR3100 supports the latest HDMI 2.1a features for gaming and 8K TV, while also offering two unique configurations for Dolby Atmos.

Choose either a 3.2.2 Dolby Atmos setup for a configuration without rear channels, or use a 5.2 speaker setup (without height speakers) in conjunction with built-in Dolby Atmos Height Virtualizer to achieve 360-degree spatial effects.

“With HDMI 2.1a support, the Onkyo TX-SR3100 provides a wide range of video resolutions and refresh rates, including 8K/60Hz and 4K/120Hz, Dolby Atmos and DTS:X formats give engineers the ability to map sound in three-dimensional space,” said Akihisa Watanabe, Project Leader at Onkyo.

Onkyo TX-SR3100 A/V Receiver Rear Angle

Key Features

Dolby Atmos and DTS:X: The Onkyo TX-SR3100 boasts cutting-edge features that promise to immerse you in a world of sound and vision like never before. Dolby Atmos and DTS:X formats give engineers the ability to map sound in three-dimensional space, allowing for effects to seamlessly move from speaker to speaker throughout the room.

Whether you’re watching the latest blockbusters or revisiting classic favorites, this technology will envelop you in a sonic experience like no other.

HDMI 2.1a with 8K: With HDMI 2.1a support, the Onkyo TX-SR3100 provides a wide range of video resolutions and refresh rates, including 8K/60Hz and 4K/120Hz, along with support for Dynamic HDR formats, ALLM, VRR, QFT and SBTM (Source-Based Tone Mapping).

The combination of a 60Hz refresh rate ensures smooth and sharp viewing of high-speed action, while HDMI 2.1a with 8K readiness guarantees that your system is equipped for the clearest and most pristine picture quality available, both now and in the future.

Onkyo TX-SR3100 A/V Receiver Front
Onkyo TX-SR3100 A/V Receiver Rear

Dolby Vision and HDR10+: Say goodbye to blurry visuals and dull colors. The Onkyo TX-SR3100 incorporates Dolby Vision and HDR10+ technology, which enhances the quality of your favorite content, delivering crisp, clear visuals and dynamic colors right to your living room.

AccuEQ Room Calibration: Setting up your home theater has never been easier, thanks to AccuEQ Room Calibration. This innovative technology ensures that your receiver and speakers are perfectly calibrated to the room they’re in, compensating for differences in speaker size and distance, resulting in exceptional audio playback no matter the space you’re in.

Vocal Enhancer: The Onkyo TX-SR3100’s Vocal Enhancer technology emphasizes dialogue and vocals by adding the Center element to your Front Left and Front Right speakers. This feature ensures that you catch every word, even during action-packed scenes with explosions or quiet moments in intense dramas, regardless of the volume setting.

Music Optimizer: For audiophiles, the Onkyo TX-SR3100’s Music Optimizer DSP listening mode restores audio files to their original lossless quality, reconstructing data lost during compression. This feature is particularly valuable for formats such as WMA, AAC, and MP3, ensuring you experience the full depth and richness of your music collection.

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Dolby Atmos Height Virtualizer: When enjoying any Dolby format, engage the Dolby Atmos Height Virtualizer for a truly immersive listening experience. This technology creates a virtual surround and height effect from traditional speaker layouts, eliminating the need for additional surround or height speakers, making it feel like sounds are coming from above and far off, just as they should.



  • 155 watts (1kHz, 10% THD, 1ch @ 6 ohms)
  • 80 watts (20-20kHz, 0.08% THD, 2ch @ 8 ohms – FTC)
  • Class AB Amplifier
  • 5.2 or 3.2.2 channels (5 amplified)


  • 4 In / 1 Out (eARC)
  • 8K/4K Ultra HD
  • Dolby Vision, HDR10+
  • 8K/4K Ultra HD, Dolby Vision, HDR10+,
  • HDCP2.3, HDMI2.1a VRR, QFT, Dynamic HDR, ALLM, DSC, SBTM


  • 4 HDMI, 3 RCA, 1 Opt, 1 Coax inputs
  • 2 preout subwoofer
  • Zone B stereo RCA lineout


  • Dolby Atmos, Dolby Surround
  • DTS:X, Neural:X
  • Dolby Atmos Height Virtualizer and DTS Virtual:X


  • 80 watts/channel x 5, High current amplifier
  • Dolby Atmos, DTS:X
  • HDMI 2.1a – 8K/4K, HDCP2.3, Dolby Vision, HDR10+, SBTM
  • 5.2-channel or 3.2.2-channel processing with Dolby Atmos height/surround virtualizer
  • Bluetooth
  • DTS:X, DTS Virtual:X, Neural:X
  • AccuEQ Room Calibration
  • Klipsch Optimized Mode
  • Music Optimizer
Onkyo TX-SR3100 A/V Receiver Front Angle in Rack

Price & Availability

The Onkyo TX-SR3100 A/V Receiver is available now for $399 at Onkyo USA and authorized retailers.

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