| AMPLIFIER |
Onkyo TX-SR494 |
Onkyo TX-NR686 |
| Channels | 7.2 | 7.2 |
| Power Output | 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) | 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) |
| Front Wide Channel Support | | |
| Amplifier Design | | Linear Class A/B |
| Dynamic Audio Amplification | | |
| Non-Phase Shift Amplifier | | |
| VLSC (Vector Linear Shaping Circuitry) | | Front L/R channels |
| Optimum Gain Volume Circuitry | | |
| THX™ Certification | | Select™ (previously known as Select2) |
| Continuous 6 Ω Rated | | |
| Certified 4 Ω Performance | | |
| Discrete Output Stage Circuitry | | |
| Independent Block Construction (Amp/Preprocessor) | | |
| Bi-amp Capability | | |
| BTL (Bridged Transless or Bridging) | | |
| AUDIO FEATURES |
Onkyo TX-SR494 |
Onkyo TX-NR686 |
| Digital Signal Processing (DSP) Engine | 32-bit Digital Signal Processing Engines | 32-bit Digital Signal Processing Engines |
| DAC | AKM | AKM AK4458 |
| DAC Specs | 384 kHz/32 Bit | 384 kHz/32 Bit |
| Maximum Channel Processing | 7.1 | 7.1 |
| Air Studios Monitor Certification | | |
| Dolby Atmos | | |
| Dolby Atmos Height Virtualization | | |
| Dolby Atmos Music | | |
| Dolby TrueHD | | |
| Dolby Digital Plus | | |
| Dolby Surround Upmixer | | |
| Dolby Pro Logic | | |
| Dolby Digital EX | | |
| THX Listening Modes | | |
| DTS:X | | |
| DTS Neural:X | | |
| DTS Virtual:X | | |
| DTS Neo | | |
| DTS-HD Master Audio | | |
| DTS-HD High Resolution Audio | | |
| DTS 96/24 | | |
| DTS Express | | |
| DTS-ES | | |
| IMAX Enhanced | | |
| Auro 3D with Auro-Matic Upmixer | | |
| PCM | 2-ch/Multi-ch Input | 2-ch/Multi-ch Input |
| Network Audio Formats | | FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, MPEG-4 AAC, LPCM |
| Music Playback via USB | | FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD |
| High Resolution Music Playback via USB and/or Network | | up to 192 kHz |
| High Resolution Audio Formats via USB | | FLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD |
| Gapless Playback | | |
| DSD via HDMI | 2-ch | 2-ch/Multi-ch Input |
| DSD via USB | | 2-ch Input |
| DSD to PCM Converter | | |
| USB DAC | | |
| Jitter Reduction | | PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio |
| DTS Dialogue Control | | |
| Dialog Enhancement | | |
| Dialog normalization | | |
| Dialogue Lift | | |
| Tone Control | Front L/R Channels | Front L/R Channels |
| Compressed Music Enhancer | Advanced Music Optimizer | Advanced Music Optimizer (bluetooth included) |
| High-resolution Music Enhancer | | |
| THX Processing Mode | | |
| Audyssey Dynamic EQ | | |
| Audyssey Dynamic Volume | | |
| Audyssey LFC | | |
| Audyssey Sub EQ HT | | |
| Audyssey DSX | | |
| Phase-Matching Bass Boost | | |
| Direct Mode | | |
| Pure Audio Mode | | |
| Pure Direct Analog Path Mode | | |
| Virtual Speakers | T-D (Theater-Dimensional) | T-D (Theater-Dimensional) |
| VIDEO FEATURES |
Onkyo TX-SR494 |
Onkyo TX-NR686 |
| HDR10 | | |
| HDR10+ | | |
| Dynamic HDR | | |
| BT.2020 color space | | |
| Dolby Vision | | |
| HLG (Hybrid Log Gamma) | | |
| HDBaseT Compatible | | |
| Enhanced Audio Return Channel (eARC) | | |
| HDCP Version | 2.3 | 2.2 |
| QMS (Quick Media Switching) | | |
| ALLM (Auto Low Latency Mode) | | |
| VRR (Variable Refresh Rate) | | |
| QFT (Quick Frame transport) | | |
| 3-D Ready | | |
| Video Signal Passthrough | up to 4K/60p (RGB/YCbCr4:4:4) | up to 4K/60p (RGB/YCbCr4:4:4) |
| Video Signal Upscaling | 1080p to 4K | |
| Analog To HDMI Upconversion | | Component**, Composite |
| Component Video Upscaling | | |
| Analog to Analog Video conversion | | |
| Component Video Maximum Resolution | | 480i/576i |
| isf Certified Calibration Control | | |
| SPECIFICATIONS |
Onkyo TX-SR494 |
Onkyo TX-NR686 |
| Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) | | 100 W (0.08% THD) |
| Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC) | 160 W (10% THD) | 210 W (10% THD) |
| Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) | 135 W (1% THD) | |
| Dynamic Power per Channel (3 Ω, Front) | | 240 W |
| Dynamic Power per Channel (4 Ω, Front) | | 210 W |
| Dynamic Power per Channel (8 Ω, Front) | | 120 W |
| THD | 0.08% (20 Hz - 20 kHz, Half power) | 0.08% (20 Hz - 20 kHz, Half power) |
| Input Sensitivity and Impedance (Line) | 200 mV/47 kΩ (1 kHz, 100 W/8 Ω) | 200 mV/47 kΩ (1 kHz, 100 W/8 Ω) |
| Input Sensitivity and Impedance (Phono MM) | | 3.5 mV/47 kΩ |
| Rated Headphone Power Output | 80 mW (32 Ω, 1 kHz, 10% THD) | 80 mW (32 Ω, 1 kHz, 10% THD) |
| Phono Overload | | 70 mV (MM, 1 kHz 0.5%) |
| S/N Ratio (Line, IHF-A) | 109 db | 106 dB |
| S/N Ratio (Phono MM, IHF-A) | | 80 dB |
| Frequency Response (Analog In) | 10 Hz - 100 kHz/+1 dB, -3 dB (Direct) | 10 Hz - 100 kHz/+1 dB, -3 dB (Direct) |
| DSD Sampling Rates via HDMI | 2.8 MHz | 2.8 MHz |
| DSD Sampling Rates via USB | | 2.8 MHz, 5.6 MHz |
| Video Input Sensitivity/Output Level and Impedance | | 1 Vp-p/75 Ω (Component Y)
0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
1 Vp-p/75 Ω (Composite) |
| Ethernet Standard | | 10BASE-T/100BASE-TX |
| Wi-Fi Standard | | IEEE 802.11 a/b/g/n |
| Wi-Fi Terminal Frequency | | 5 GHz, 2.4 GHz |
| Bluetooth Version | 4․2 | 4․1 + LE |
| Bluetooth Frequency | 2.4 GHz | 2.4 GHz |
| USB Terminal | 5 V, 1 A | Ver. 2.0, 5 V, 1 A |
| FM Frequency | 87.5 MHz - 108.0 MHz | 87.5 MHz - 107.9 MHz |
| FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.) | Mono: 1.0 µV (11.2 dBf) | Mono: 1.56 µV (15.0 dBf) |
| AM Frequency | 522/530 kHz - 1611/1710 kHz | 530 kHz - 1710 kHz |
| Warranty | 2 Years | 2 Years |
