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  • HDMI® 1.4a Support for 3D Video and Audio Return Channel
  • Decoding of High-Definition Surround-Sound Codecs
  • Universal Port for Optional Onkyo Dock for iPhone™/iPod® or DAB+ Radio Tuner
  • Convenient Overlaid On-Screen Display via HDMI
  • Four Game Modes for More Realistic Action

5.1-Channel Home Cinema Receiver

The Ideal Choice for Newcomers - a High-Value Home Cinema Centerpiece

At the budget-conscious end of the home entertainment spectrum, you’re looking to maximize performance and features without putting undue strain on your finances. At Onkyo, we get it. That’s why we’ve redefined the entry-level A/V receiver once more, with the high-value TX-SR308. Not only is it ready for 3D video—thanks to its HDMI™ 1.4a specification—but it also handles high-definition lossless audio codecs from Dolby and DTS. Advanced A/V processing on a bedrock of classic Onkyo engineering is complemented by a bevy of convenient features: a new overlaid On-Screen Display for easy adjustment of settings; a Universal Port for single-cable connection of peripherals; and a front-panel audio input for direct connection of iPods and other MP3 players. With the TX-SR308, you get an affordable home cinema centerpiece ready to drive the latest high-def entertainment sources.



  • HDMI™ Version 1.4a to Support 3D Video Formats, Audio Return Channel, Deep Color™, x.v.Color™, LipSync, Dolby® TrueHD, DTS-HD Master Audio™, DVD-Audio, Super Audio CD, Multichannel PCM, and CEC
  • Dolby® TrueHD, DTS-HD Master Audio™, Dolby® Digital Plus, DTS-HD High-Resolution Audio™ Decoding
  • Universal Port for Single-Cable Connection of Optional Onkyo Dock for iPod or DAB+ Radio Tuner
  • Overlaid On-Screen Display (OSD) via HDMI
  • 100 W/Ch at 6 Ω, 1 kHz, 1 Channel Driven, IEC
  • H.C.P.S. (High Current Power Supply) Massive High Power Transformer
  • Optimum Gain Volume Circuitry
  • Jitter-Cleaning Circuit Technology
  • Burr-Brown 192 kHz/24-Bit DACs (PCM1690) for All Channels
  • Advanced 32-Bit Processing DSP Chip
  • 4 DSP Modes for Gaming: Rock, Sports, Action, and RPG (Role Playing Game)
  • Music Optimizer™ for Compressed Digital Music Files
  • Theater-Dimensional Virtual Surround Function
  • CinemaFILTER™
  • Direct Mode
  • Double Bass Function
  • Non-Scaling Configuration
  • A-Form Listening Mode Memory


  • Audio and 1080p Video Processing via HDMI (3 Inputs and 1 Output)
  • HDTV-Capable (720p/1080i) Component Video Switching (2 Inputs and 1 Output)
  • Front-Panel Audio Input for Portable Devices
  • 3 Digital Inputs (2 Optical and 1 Coaxial)
  • 4 A/V Inputs and 1 Output
  • Video Output (Monitor)
  • 1 Audio Input
  • Subwoofer Pre Out
  • Speaker A/B Terminals
  • Banana Plug-Compatible Speaker Posts for Front L/R Channels (Speaker A)
  • Color-Coded Speaker Terminals
  • Headphone Jack
  • Crossover Adjustment (40/50/60/80/100/120/150/200 Hz)
  • A/V Sync Control Function (Up to 100 ms in 10 ms Steps)
  • Tone Control (Bass/Treble) for Front L/R Channels
  • 3-Mode Display Dimmer (Normal/Dim/Dimmer)
  • Sleep Timer (via Remote)
  • Battery-Free Memory Backup
  • 40 FM/AM Random Presets
  • RIHD (Remote Interactive over HDMI) for System Control
  • Compatible with RI (Remote Interactive) Dock for iPod
  • RI (Remote Interactive) Remote Control




Datasheets Documentation

RSS News

Selected Onkyo A/V Receivers gain ‘Roon Tested’ Accreditation

Onkyo & Pioneer Corporation is pleased to announce that selected A/V receivers from Onkyo’s 2019 range have received… more

Press Release dated: 18 Sep 2019
Voice-control technologies, HDMI® support, and AccuEQ feature on Onkyo’s new Hi-Fi stereo receiver

TOKYO, JAPAN. September 3, 2019 — Onkyo & Pioneer Corporation, a driving force behind global home-entertainment and… more

Press Release dated: 3 Sep 2019
Onkyo’s new 11.2-Ch Flagship AVR builds on a legacy of electrifying sound with unique functions and a broad platform of next-generation audio-video features

TOKYO, JAPAN. September 3, 2019 — Onkyo & Pioneer Corporation today unveils its much-anticipated 11.2-channel flagship… more

Press Release dated: 3 Sep 2019
Firmware Update for IMAX® Enhanced and Dolby Atmos Height Virtualizer Released for Select Onkyo A/V Components

TOKYO, JAPAN. August 1, 2019 — Onkyo & Pioneer Corporation is pleased to release a firmware update today that… more

Press Release dated: 1 Aug 2019
Termination of Gracenote music recognition service on certain Onkyo products

Dear Valued Customer, We regret to inform you that we will terminate Gracenote music recognition service from the ONKYO… more

Press Release dated: 2 Jul 2019