| AMPLIFIER |
Onkyo TX-NR646 |
Yamaha RX-A1000 |
| Channels | 7.2 | 7.2 |
| Power Output | 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) | 105 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) |
| Front Wide Channel Support | | |
| WRAT (Wide Range Amplifier Technology) | | |
| VLSC (Vector Linear Shaping Circuitry) | | |
| Optimum Gain Volume Circuitry | | |
| THX™ Certification | | |
| Continuous 6 Ω Rated | | |
| Certified 4 Ω Performance | | |
| Discrete Output Stage Circuitry | | |
| 3-Stage Inverted Darlington Circuitry | | |
| PUSH-PULL Design | | |
| Independent Block Construction (Amp/Preprocessor) | | |
| Bi-amp Capability | | |
| BTL (Bridged Transless or Bridging) | | |
| AUDIO FEATURES |
Onkyo TX-NR646 |
Yamaha RX-A1000 |
| Digital Signal Processing (DSP) Engine | Dual 32-bit DSP for Powerful Advanced Processing | |
| Surround:AI™ | | |
| DAC | Asahi Kasei AK4458 | Burr-Brown |
| DAC Specs | 384 kHz/32 Bit | 192 kHz/24 Bit |
| Maximum Channel Processing | 7.1 | 7.1 |
| Air Studios Monitor Certification | | |
| Dolby Atmos | up to 5.1.2 after firmware update | |
| Dolby Atmos Height Virtualization | | |
| Dolby Atmos Music | | |
| Dolby TrueHD | | |
| Dolby Digital Plus | | |
| Dolby Surround Upmixer | | |
| Dolby Pro Logic | | PLIIx |
| Dolby Digital EX | | |
| Surround EX | | |
| DTS:X | up to 5.1.2 after firmware update | |
| DTS Neural:X | after firmware update | |
| DTS Virtual:X | | |
| DTS Neo | Neo:6 until firmware update | Neo:6 |
| DTS-HD Master Audio | | |
| DTS-HD High Resolution Audio | | |
| DTS 96/24 | | |
| DTS Express | | |
| DTS-ES | | Discrete 6.1, Matrix 6.1 |
| IMAX Enhanced | | |
| Auro 3D with Auro-Matic Upmixer | | |
| PCM | 2-ch/Multi-ch Input | 2-ch/Multi-ch Input |
| Network Audio Formats | | MP3, WMA, MPEG-4 AAC, WAV, FLAC |
| Music Playback via USB | FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TrueHD | MP3, WMA, AAC, WAV, FLAC |
| High Resolution Music Playback via USB and/or Network | up to 96 kHz | USB: up to 48 kHz, PC Server, DLNA: up to 96 kHz |
| High Resolution Audio Formats via USB | FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC | WAV, FLAC |
| Gapless Playback | | |
| DSD via HDMI | 2-ch/Multi-ch Input | 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 Level Adjustment | DTS:X only | |
| Dialog normalization | | |
| Dialogue Lift | | |
| Tone Control | Front L/R Channels | |
| Compressed Music Enhancer | Advanced Music Optimizer (bluetooth included) | |
| High-resolution Music Enhancer | | |
| Adaptive DRC (Dynamic Range Control) | | |
| Initial Volume & Maximum Volume Setting | | |
| THX Processing Mode | | |
| Audyssey Dynamic EQ | | |
| Audyssey Dynamic Volume | | |
| Audyssey LFC | | |
| Audyssey Sub EQ HT | | |
| Audyssey DSX | | |
| Phase-Matching Bass Boost | for Deep Bass and Clear Mid-Range | |
| Direct Mode | | |
| Pure Audio Mode | | |
| Pure Direct Analog Path Mode | | |
| Straight Decoding Mode | | |
| Pure Direct Mode | | |
| CINEMA DSP | | 3D |
| DSP Programs | | 17 |
| SILENT CINEMA / Virtual CINEMA DSP | | |
| Virtual Speakers | T-D (Theater-Dimensional) | |
| Independent Subwoofer Outputs | | |
| VIDEO FEATURES |
Onkyo TX-NR646 |
Yamaha RX-A1000 |
| HDR10 | | |
| HDR10+ | | |
| Dynamic HDR | | |
| BT.2020 color space | | |
| Dolby Vision | | |
| HLG (Hybrid Log Gamma) | | |
| HDBaseT Compatible | | |
| Enhanced Audio Return Channel (eARC) | | |
| HDCP Version | 2.2 (3 inputs / 2 outputs) | |
| 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/YCbCr4:2:2, 24 bit) | up to 1080p |
| Video Signal Upscaling | | up to 1080p * |
| Analog To HDMI Upconversion | Component**, Composite | Component****, S-Video, Composite |
| Component Video Upscaling | | |
| Analog to Analog Video conversion | | (Component**, S-Video, Composite) to (Component, S-Video, Composite) |
| Component Video Maximum Resolution | 480i/576i | 1080i |
| Video Parameter Adjustments | | |
| isf Certified Calibration Control | | |
| SPECIFICATIONS |
Onkyo TX-NR646 |
Yamaha RX-A1000 |
| Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) | 100 W (0.08% THD) | 105 W (0.06% THD) |
| Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC) | | 120 W (0.7% THD) |
| Power Output (6 Ω, 1 kHz, 1 channel driven, FTC) | 170 W (0.9% THD) | |
| Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC) | 175 W | |
| Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) | 160 W (1% THD) | |
| Dynamic Power per Channel (2 Ω, Front) | | 280 W |
| Dynamic Power per Channel (3 Ω, Front) | 240 W | |
| Dynamic Power per Channel (4 Ω, Front) | 210 W | 210 W |
| Dynamic Power per Channel (6 Ω, Front) | | 165 W |
| Dynamic Power per Channel (8 Ω, Front) | 120 W | 135 W |
| THD | 0.08% (20 Hz - 20 kHz, Half power) | 0.04% (AV1 to Speaker Out, Pure Direct, 65 W, 8 Ω) |
| THD (Phono) | | 0.02% (Phono to AV OUT) |
| Damping Factor | 60 (Front, 1 kHz, 8 Ω) | 150 (Front, 1 kHz, 8 Ω) |
| Input Sensitivity and Impedance (Line) | 200 mV/47 kΩ (Line) | 200 mV/47 kΩ |
| Input Sensitivity and Impedance (Phono MM) | 3.5 mV/47 kΩ (Phono mm) | 3.5 mV/47 kΩ |
| Maximum Input Sensitivity (Line) | | 2.4 V |
| Maximum Input Sensitivity (Phono) | | 60 mV |
| Rated Preout Level and Impedance | | 1.0 V/1.2 kΩ |
| Rated Lineout Level and Impedance | | 200 mV/1.2 kΩ (AV OUT) |
| Rated Headphone Jack Output Level and Impedance | | 150 mV/100 Ω |
| Phono Overload | 70 mV (MM, 1 kHz 0.5% Direct) | |
| S/N Ratio (Line, IHF-A) | 100 dB | 100 dB |
| S/N Ratio (Phono MM, IHF-A) | 80 dB | 86 dB |
| Frequency Response (Analog In) | 10 Hz - 100 kHz/+1 dB, -3 dB (Direct mode) | +0/-3 dB (10 Hz to 100 kHz) |
| Residual noise (IHF-A Network) | | 150 µV (Front L/R Speaker Out) |
| Channel Separation at 1 kHz/10 kHz (LINE) | | 60 dB/45 dB |
| Channel Separation at 1 kHz/10 kHz (Phono) | | 60 dB/55 dB |
| DSD Sampling Rates via HDMI | 2.8 MHz, 5.6 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) | 1 Vp-p/75 Ω (Component Y and S-Video Y)
0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
1 Vp-p/75 Ω (Composite)
NTSC: 0.286 Vp-p/75 Ω (S-Video C)
PAL: 0.3 Vp-p/75 Ω (S-Video C) |
| Video Maximum Input | | 1.5 Vp-p |
| Video Frequency Response | 5 Hz - 100 MHz/+0 dB, -3 dB (Component) | 5 Hz to 100 MHz, ±3 dB (Component) |
| Video S/N Ratio | | 60 dB |
| Ethernet Standard | 10BASE-T/100BASE-TX | 10BASE-T/100BASE-TX |
| Wi-Fi Standard | IEEE 802.11 b/g/n | |
| Wi-Fi Terminal Frequency | 2.4 GHz | |
| Bluetooth Version | 2․1 + EDR | |
| Bluetooth Frequency | 2.4 GHz | |
| USB Terminal | 5 V, 1 A | USB1.1 Full Speed |
| 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: 3 µV (20.8 dBf) |
| FM S/N Ratio | | HD: 80 dB |
| FM Harmonic Distortion (IHF, 1 kHz) | | Mono/Stereo: 0.3%/0.3% |
| AM Frequency | 522/530 kHz - 1611/1710 kHz | 530 MHz - 1710 MHz |
| Warranty | 2 Years | 3 years |
