Integra DRX-4.3 vs Onkyo TX-NR646

GENERAL	Integra DRX-4.3	Onkyo TX-NR646
Brand	Integra	Onkyo
Model	DRX-4.3	TX-NR646
Type	A/V Receiver	A/V Receiver
Country	Australia	Europe, Australia and Asia
Release Year	2019	2015
Predecessor	Integra DRX-4.2	Onkyo TX-NR636
Successor		Onkyo TX-NR656

AMPLIFIER	Integra DRX-4.3	Onkyo TX-NR646
Channels	9.2	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
Non-Phase Shift Amplifier
WRAT (Wide Range Amplifier Technology)
VLSC (Vector Linear Shaping Circuitry)	Front L/R
Optimum Gain Volume Circuitry
THX™ Certification	Select™ (previously known as Select2)
Continuous 6 Ω Rated
Certified 4 Ω Performance
Discrete Output Stage Circuitry	2-Stage
3-Stage Inverted Darlington Circuitry
PUSH-PULL Design
Independent Block Construction (Amp/Preprocessor)
Bi-amp Capability	Front L/R Channels
BTL (Bridged Transless or Bridging)

AUDIO FEATURES	Integra DRX-4.3	Onkyo TX-NR646
Digital Signal Processing (DSP) Engine	32-Bit DSP Chip for Advanced Processing	Dual 32-bit DSP for Powerful Advanced Processing
DAC	AKM AK4458	Asahi Kasei AK4458
DAC Specs	384 kHz/32 Bit	384 kHz/32 Bit
Maximum Channel Processing	11.2	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
Dolby Digital EX
THX Listening Modes
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
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
Music Playback via USB	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC	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	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 circuitry for SPDIF digital 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	All 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		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	Integra DRX-4.3	Onkyo TX-NR646
Auto Speaker Calibration System with Mic.	AccuEQ Advance 9-point calibration with subwoofer EQ and AccuReflex™	AccuEQ Advance
Standing Wave Control	Standing Wave EQ
Distance Adjustment	0.1 - foot

VIDEO FEATURES	Integra DRX-4.3	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	2.3	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 50/60Hz 4:4:4	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	Integra DRX-4.3	Onkyo TX-NR646
Wi-Fi
Bluetooth	SBC, AAC
Works with Amazon Alexa
Google Assistant
Chromecast Built-In
Apple Siri
Works with SonoS
DTS Play-Fi
MHL Input
DLNA 1.5
Remote Monitoring with ihiji
AirPlay	Airplay 2	AirPlay
Apple Product Connection	iPod, iPhone and iPad	iPod, iPhone and iPad
Remote App	Integra Control Pro	Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices
InstaPrevue Input Source Prevue

TERMINALS	Integra DRX-4.3	Onkyo TX-NR646
HDMI Inputs	7 (1 front)	8 (1 front)
HDMI Outputs	2 (1 Main, 1 Sub/Zone2)	2 (simultaneous)
8K Inputs
USB Input	1 (Rear)	1 (Rear)
USB DC Out Port
Optical Inputs	1	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	11.2 (shared with Zone 2 Line/Pre Out)	0.2
XLR Pre-outs
Composite Video Inputs	3 (1 front)	3
Composite Video Outputs
S-Video Inputs
S-Video Outputs
Component Video Inputs	1	2
Component Video Outputs
Ethernet
Ethernet Switch
PC In
Front A/V Inputs	HDMI, Composite, L/R Audio	HDMI
Speaker A/B
Headphone Out	6.3 mm (1/4")	6.3 mm (1/4")
Detachable Power Cord	Oversized AC Cord
uport

ZONES	Integra DRX-4.3	Onkyo TX-NR646
Number of Zones	3	2
Powered Zones	2 and 3	2
Zone 2 Outs	HDMI, RCA Pre/Line Out (shared with Zone B Line Out)	RCA Line Out
Zone 3 Outs	RCA Pre/Line Out (shared with Zone B Line Out)
Whole House Mode
RS-232C Interface
+12V Trigger Output	3 (A:100 mA, B:25 mA, C:25 mA)	0
Remote (IR) Input/Output	2 / 1	0 / 0

MISCELLANEOUS	Integra DRX-4.3	Onkyo TX-NR646
On-Screen Display		Graphical Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up
GUI Languages	9
IP Control
Control4 SDDP
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	Integra DRX-4.3	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	Integra DRX-4.3	Onkyo TX-NR646
Front Panel	Anti-Resonant Aluminum Front Panel
Solid Aluminum Front
Speaker Terminals	11	9
Large Speaker Terminals	11	9
Color-Coded Speaker Terminals
Transparent High-Grade Speaker Terminals
Gold plated RCA terminals
Rack Mount Kit Available	IRK-155-3D

POWER	Integra DRX-4.3	Onkyo TX-NR646
Power Supply	AC 220-230 V, 50/60 Hz	AC 220-240 V, 50/60 Hz
Independent Power Supply	2	2
H.C.P.S. (High Current Power Supply)	Massive High Power Transformer	Massive High Power Transformer
Toroidal Transformer
Power Consumption	760 W	630 W
No Sound Power		70 W
Standby Power	0.15 W	0.15 W
Capacitor Bank		8,200 µF
ECO Mode / Hybrid Standby Function

PHYSICAL	Integra DRX-4.3	Onkyo TX-NR646
Dimensions (W x H x D)	435 mm x 174 mm x 376.5 mm 17-1/8" x 6-7/8" x 14-13/16"	435 mm x 173.5 mm x 329 mm 17-1/8" x 6-13/16" x 12-15/16"
Dimensions of Package (W x H x D)	560 mm x 305 mm x 467 mm 22-1/16" x 12" x 18-3/8"
Weight	11.2 kg (24.7 lbs)	9.8 kg (21.6 lbs)
Weight of Package	14.0 kg (30.9 lbs)

SPECIFICATIONS	Integra DRX-4.3	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)	185 W (10% THD)	175 W
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	175 W (1% THD)	160 W (1% THD)
Dynamic Power per Channel (3 Ω, Front)	250 W	240 W
Dynamic Power per Channel (4 Ω, Front)	220 W	210 W
Dynamic Power per Channel (8 Ω, Front)	130 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 (Line)	200 mV/47 kΩ (Line)
Input Sensitivity and Impedance (Phono MM)	3.5 mV/47 kΩ	3.5 mV/47 kΩ (Phono mm)
Rated Preout Level and Impedance	1 V/470 Ω
Rated Headphone Jack Output Level and Impedance	8 Ω - 600 Ω
Rated Headphone Power Output	85 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)	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, 11.2 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/ac	IEEE 802.11 b/g/n
Wi-Fi Terminal Frequency	5 GHz, 2.4 GHz	2.4 GHz
Bluetooth Version	4․2	2․1 + EDR
Bluetooth Frequency	2.4 GHz	2.4 GHz
USB Terminal	Ver. 2.0, 5 V, 1 A	5 V, 1 A
FM Frequency	87.5 MHz - 108.0 MHz	87.5 MHz - 108.0 MHz
FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)	Mono: 1.0 µV (11.2 dBf)
AM Frequency	522/530 kHz - 1611/1710 kHz	522/530 kHz - 1611/1710 kHz
Warranty	3 Years	2 Years

* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted

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