GENERAL | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Brand | Onkyo | Onkyo |
Model | TX-NR656 | TX-NR646 |
Type | A/V Receiver | A/V Receiver |
Country | Asia | Europe, Australia and Asia |
Release Year | 2016 | 2015 |
Predecessor | Onkyo TX-NR646 | Onkyo TX-NR636 |
Successor | Onkyo TX-NR676E | Onkyo TX-NR656 |
AMPLIFIER | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Channels | 7.2 | 7.2 |
Power Output | 100 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 | ||
Dynamic Audio Amplification | ||
Non-Phase Shift Amplifier | ||
WRAT (Wide Range Amplifier Technology) | ||
VLSC (Vector Linear Shaping Circuitry) | Front L/R channels | |
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-NR656 | Onkyo TX-NR646 |
---|---|---|
Digital Signal Processing (DSP) Engine | 32-bit Digital Signal Processing Enginess | Dual 32-bit DSP for Powerful Advanced Processing |
DAC | AKM AK4458 (8 Channels x 1) | Asahi Kasei AK4458 |
DAC Specs | 384 kHz/32 Bit | 384 kHz/32 Bit |
Maximum Channel Processing | 7.1 | 7.1 |
Air Studios Monitor Certification | ||
Dolby Atmos | up to 5.1.2 | 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 | ||
Dolby Digital EX | ||
Surround EX | ||
DTS:X | up to 5.1.2 | up to 5.1.2 after firmware update |
DTS Neural:X | after firmware update | after firmware update |
DTS Virtual:X | ||
DTS Neo | Neo:6 until firmware update | Neo:6 until firmware update |
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 | FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TrueHD |
High Resolution Music Playback via USB and/or Network | up to 192 kHz | up to 96 kHz |
High Resolution Audio Formats via USB | FLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD | FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC |
Gapless Playback | ||
DSD via HDMI | 2-ch/Multi-ch Input | 2-ch/Multi-ch Input |
DSD via USB | 2-ch Input | 2-ch Input |
DSD to PCM Converter | ||
USB DAC | ||
Jitter Reduction | PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio | 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 | Front L/R Channels |
Compressed Music Enhancer | Advanced Music Optimizer (bluetooth included) | 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 | for Deep Bass and Clear Mid-Range | |
Direct Mode | ||
Pure Audio Mode | ||
Pure Direct Analog Path Mode | ||
Virtual Speakers | T-D (Theater-Dimensional) | T-D (Theater-Dimensional) |
Independent Subwoofer Outputs |
CALIBRATION | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Auto Speaker Calibration System with Mic. | AccuEQ with AccuReflex™ | AccuEQ Advance |
VIDEO FEATURES | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
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) | 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) | up to 4K/60p (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit) |
Video Signal Upscaling | 1080p to 4K | |
Analog To HDMI Upconversion | Component**, Composite | Component**, Composite |
Component Video Upscaling | ||
Analog to Analog Video conversion | ||
Component Video Maximum Resolution | 480i/576i | 480i/576i |
isf Certified Calibration Control |
CONNECTIVITY | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Wi-Fi | ||
Bluetooth | SBC, AAC | |
Works with Amazon Alexa | ||
Chromecast Built-In | ||
Works with SonoS | ||
DTS Play-Fi | ||
MHL Input | ||
DLNA 1.5 | ||
AirPlay | AirPlay | AirPlay |
Apple Product Connection | iPod, iPhone and iPad | iPod, iPhone and iPad |
Remote App | Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices | Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices |
InstaPrevue Input Source Prevue |
TERMINALS | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
HDMI Inputs | 8 (1 front) | 8 (1 front) |
HDMI Outputs | 2 (simultaneous) | 2 (simultaneous) |
8K Inputs | ||
USB Input | 1 (Rear) | 1 (Rear) |
USB DC Out Port | ||
Optical Inputs | 2 | 2 |
Optical Outputs | ||
Coaxial Inputs | 1 | 1 |
RCA Line Inputs | 7 (1 Front) | 7 |
RCA Line Outputs | 1 | |
XLR Line Inputs | ||
Phono Input | ||
Multi-Channel Input | ||
RCA Pre-Outs | 0.2 | 0.2 |
XLR Pre-outs | ||
Composite Video Inputs | 2 | 3 |
Composite Video Outputs | ||
S-Video Inputs | ||
S-Video Outputs | ||
Component Video Inputs | 2 | 2 |
Component Video Outputs | ||
Ethernet | ||
Ethernet Switch | ||
PC In | ||
Front A/V Inputs | HDMI, Mini-Jack | HDMI |
Speaker A/B | ||
Headphone Out | 6.3 mm (1/4") | 6.3 mm (1/4") |
Detachable Power Cord | ||
uport |
ZONES | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Number of Zones | 2 | 2 |
Powered Zones | 2 | 2 |
Zone 2 Outs | RCA Line Out | RCA Line Out |
Whole House Mode | ||
RS-232C Interface | ||
+12V Trigger Output | 0 | 0 |
Remote (IR) Input/Output | 0 / 0 | 0 / 0 |
MISCELLANEOUS | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
On-Screen Display | Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up | Graphical Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up |
GUI Languages | 9 | |
ONKYO-RI System Control | ||
RIHD (Remote Interactive Over HDMI) | ||
Pre-Pro/Learning Remote | / | / |
On Screen Remote Programming | ||
Bi-directional Remote Setup via GUI | ||
Smart Grid-Ready |
RADIO | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Analog Tuner | FM/AM with RDS | FM/AM with RDS |
Presets | 40 | 40 |
Digital Radio | ||
Internet Radio | TuneIn | TuneIn |
Pandora | ||
Spotify | ||
Tidal | ||
Deezer | ||
Napster | ||
SiriusXM |
CONSTRUCTION | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Solid Aluminum Front | ||
Speaker Terminals | 9 | 9 |
Large Speaker Terminals | 9 | 9 |
Color-Coded Speaker Terminals | ||
Transparent High-Grade Speaker Terminals | ||
Gold plated RCA terminals |
POWER | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Power Supply | AC 220-240 V, 50/60 Hz | AC 220-240 V, 50/60 Hz |
Independent Power Supply | 2 | |
H.C.P.S. (High Current Power Supply) | Massive High Power Transformer | Massive High Power Transformer |
Toroidal Transformer | ||
Power Consumption | 570 W | 630 W |
No Sound Power | 65 W | 70 W |
Standby Power | 0.15 W | 0.15 W |
Capacitor Bank | 8,200 µF | |
ECO Mode / Hybrid Standby Function |
PHYSICAL | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Dimensions (W x H x D) | 435 mm x 173.5 mm x 378 mm 17-1/8" x 6-13/16" x 14-7/8" | 435 mm x 173.5 mm x 329 mm 17-1/8" x 6-13/16" x 12-15/16" |
Weight | 10.0 kg (22.0 lbs) | 9.8 kg (21.6 lbs) |
SPECIFICATIONS | Onkyo TX-NR656 | Onkyo TX-NR646 |
---|---|---|
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) | 100 W (0.08% 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 (10% THD) | 175 W |
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) | 160 W (1% THD) | 160 W (1% THD) |
Dynamic Power per Channel (3 Ω, Front) | 240 W | 240 W |
Dynamic Power per Channel (4 Ω, Front) | 210 W | 210 W |
Dynamic Power per Channel (8 Ω, Front) | 120 W | 120 W |
THD | 0.08% (20 Hz - 20 kHz, Half power) | 0.08% (20 Hz - 20 kHz, Half power) |
Damping Factor | 60 (Front, 1 kHz, 8 Ω) | |
Input Sensitivity and Impedance (Line) | 200 mV/47 kΩ (1 kHz, 100 W/8 Ω) | 200 mV/47 kΩ (Line) |
Input Sensitivity and Impedance (Phono MM) | 3.5 mV/47 kΩ | 3.5 mV/47 kΩ (Phono mm) |
Rated Headphone Jack Output Level and Impedance | 330 Ω | |
Rated Headphone Power Output | 90 mW (32 Ω, 1 kHz, 10% THD) | |
Phono Overload | 70 mV (MM, 1 kHz 0.5%) | 70 mV (MM, 1 kHz 0.5% Direct) |
S/N Ratio (Line, IHF-A) | 106 dB | 100 dB |
S/N Ratio (Phono MM, IHF-A) | 80 dB | 80 dB |
Frequency Response (Analog In) | 10 Hz - 100 kHz/+1 dB, -3 dB (Direct/Pure Audio) | 10 Hz - 100 kHz/+1 dB, -3 dB (Direct mode) |
DSD Sampling Rates via HDMI | 2.8 MHz | 2.8 MHz, 5.6 MHz |
DSD Sampling Rates via USB | 2.8 MHz, 5.6 MHz | 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) 0.7 Vp-p/75 Ω (Component PB/CB, PR/CR) 1 Vp-p/75 Ω (Composite) |
Video Frequency Response | 5 Hz - 100 MHz/+0 dB, -3 dB (Component) | |
Ethernet Standard | 10BASE-T/100BASE-TX | 10BASE-T/100BASE-TX |
Wi-Fi Standard | IEEE 802.11 a/b/g/n | IEEE 802.11 b/g/n |
Wi-Fi Terminal Frequency | 5 GHz, 2.4 GHz | 2.4 GHz |
Bluetooth Version | 4․1 + LE | 2․1 + EDR |
Bluetooth Frequency | 2.4 GHz | 2.4 GHz |
USB Terminal | 5 V, 1 A | 5 V, 1 A |
FM Frequency | 87.5 MHz - 108.0 MHz | 87.5 MHz - 108.0 MHz |
AM Frequency | 522/530 kHz - 1611/1710 kHz | 522/530 kHz - 1611/1710 kHz |
Warranty | 2 Years | 2 Years |
* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted
For a full review please go to the review page: