Integra DRX-7.3 (Australian version)

•   Overview
•   Pros and Cons
•   Predecessor
•   Audio Section
•   Video Section
•   Multi-zone Playback
•   Inputs and Outputs
•   Specifications
•   Successor

Integra DRX-7.3 was introduced in 2019 and represented a flagship model of a manufacturer. It is equipped with 9 channel amplifier with 135 W (8 Ω, 1 kHz, 2 channel driven) power per channel and is capable of 11.2 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz and upscales 1080p to 4K video signal.

We evaluated the a/v receiver and gave 92 overall score out of 100. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

In this section we present pros and cons of Integra DRX-7.3.

Here we are comparing Integra DRX-7.3 to its predecessor DRX-7.1 and displaying the major changes.

UPGRADES	Integra DRX-7.3	vs	Integra DRX-7.1
Dolby Atmos Height Virtualization		vs
IMAX Enhanced		vs
More Advanced Auto Speaker Calibration System	AccuEQ Advance Plus 9-point calibration with subwoofer EQ and AccuReflex™	vs	AccuEQ Advance with AccuReflex™
Works with Amazon Alexa		vs
Apple Siri		vs
Wi-Fi		vs
Bluetooth	SBC, AAC	vs
More HDMI Outputs	3 (1 Main, 1 Sub, 1 Zone2)	vs	2 (1 Main, 1 Sub/Zone2)
Remote (IR) Input/Output	3 / 2	vs	2 / 1
Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	205 W (1% THD)	vs	200 W (1% THD)

DOWNGRADES	Integra DRX-7.3	vs	Integra DRX-7.1
Less Component Video Outputs		vs	1
+12V Trigger Output	2 (A:100 mA, B:25 mA)	vs	3 (A:100 mA, B:25 mA, C:25 mA)
Smaller Power Supply	310 W	vs	330 W
Higher THD	0.05% (1 kHz, 100 W, 8 Ω)	vs	0.04% (1 kHz, 100 W, 8 Ω)
Lower S/N Ratio (Line, IHF-A)	107 dB	vs	108 dB

For more detailed comparison between the models please visit Integra DRX-7.3 vs Integra DRX-7.1.

9 channel Hybrid Digital High-Current Amplifier

Integra DRX-7.3 features 9 channel power amplifier. It is rated at 135 W (8 Ω, 1 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

THX Select™ (previously known as Select2) certified

Integra DRX-7.3 is THX Select™ (previously known as Select2) certified. This means that it is ideally suited for a room where the screen-to-seat viewing distance is approximately 3 to 4 meters, and the room size is approximately 56 cubic meters.

• THX™ Certification: THX™ Certification offers optimal performance, superior quality and seamless integration. THX works with partners from the ground up, so that certified products deliver professional quality audio-visual experiences right out of the box. They only certify the very best products with uncompromised quality, performance and consistency. They ensure that THX certified devices play well with lower performing devices and components. THX listening modes make the receiver to have one speaker set up for movies, music and games. They are tested for power output, bass management, signal-to-noise ratio and feature THX Loudness Plus, Boundary Gain Compensation, Timbre Matching and RE-EQ.
• Power Output: Power output is tested to ensure the receiver accurately plays source material at THX Reference Level in every input and mode and at every sampling rate for all possible playback combinations selected by the listener.
• Frequency Response: THX has strict requirements for frequency response to ensure that you hear all the details in high-resolution tracks, ensures dialog in movies, and vocals in music are clear while maintaining deep, impactful bass output that doesn’t overpower the listening experience.
• Signal-to-Noise Ratio: THX tests the signal-to-noise ratio to ensure the unit is designed to have low noise performance with very little to no audible hiss from the speakers.
• Bass Management: THX requires an 80Hz crossover point in the setup menu to ensure proper bass management in every THX Certified AVR. This setting confirms that the subwoofer handles low frequencies, freeing up the loudspeakers to handle mids and highs.
• THX Loudness Plus™: THX Loudness Plus™ is a volume control technology featured in THX Certified Dominus, THX Certified Ultra and THX Certified Select AV Receivers, and preamplifiers that automatically adjusts the front-to-back speaker level relationship as you turn the volume down. With THX Loudness Plus, home theater audiences can now experience the rich details of surround sound at any volume level.
• Boundary Gain Compensation: Sitting near a wall may result in increased acoustic levels at the lower frequencies. BGC corrects the way low frequency sound is perceived when seated near a wall. This results in a more accurate bass response.
• Timbre Matching: Your ears hear different tonal qualities in sounds coming from different directions. Timbre Matching restores the frequency balance between your front and surround speakers ensuring seamless and smooth panning between the front to back of the room.
• RE-EQ: Many movie soundtracks are mixed in studios for playback in large cinema auditoriums with an array of speakers. When played on home systems, they may appear abrasive and edgy. Re-EQ establishes a more accurate tonal balance when enjoying movies in your home.

Speaker Configurations

Integra DRX-7.3's 9 channel amplifier can be assigned for different speaker configurations.

• Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
5.2.2, 5.2.4, 7.2.2 with internal amplifier.
7.2.4 with addition of external 2 channel amplifier.
• DTS:X Configurations: The speaker configurations for DTS:X are the same as for Dolby Atmos:
5.2.2, 5.2.4, 7.2.2 with internal amplifier.
7.2.4 with addition of external 2 channel amplifier.
• Configurations without height channels: There are also other speaker configurations available which do not include height channels:
5.2, 7.2 with internal amplifier.
• 2-ch Bi-Amp: Integra DRX-7.3 allows you to bi-amp up to 2 main channels simultaneously. During bi-amplification two amplifiers are used for one speaker. One amplifier powers the midrange and tweeter section of the speaker and another amplifier powers the low frequency woofers. Each amplifier is less loaded and performs better. In order to use this feature speakers must have 2 pairs of connectors.

Dolby Atmos

Integra DRX-7.3 supports Dolby Atmos. It is a cinematic audio format in which sounds exist as individual entities, called audio objects. In Dolby Atmos, any sound can exist as an independent audio object, free of channel restrictions. They can be precisely placed and moved anywhere in your room, including overhead, to flow above and around you in three-dimensional space. Through the use of audio objects, overhead sound, and all the richness, clarity, and power of Dolby sound, Dolby Atmos turns your room into an amazing place for entertainment. The format supports up to 128 simultaneous independent audio objects in a mix for rich, realistic, and breathtaking sound. It recreates the director's original concept through descriptive metadata to provide customized playback for home theater and delivers sounds above you through overhead speakers, special upward-firing Dolby Atmos speakers, or a Dolby Atmos enabled sound bar.

• Dolby Surround Upmixer: If the content is not mixed in Dolby Atmos then the Dolby surround upmixer will expand the audio to all channels including ceiling speakers. The upmixer has replaced the Dolby Pro Logic II family with improved upmixing algorithms.
• Dolby Atmos Height Virtualization: Dolby Atmos height virtualization is a digital signal processing solution that leverages Dolby's deep understanding of human audio perception to create the sensation of overhead sound from the listener-level speakers.

DTS:X

Integra DRX-7.3 supports DTS:X. A technique used in DTS:X is similar to the one used in Dolby Atmos. Instead of a fixed number of channels, DTS:X defines object locations from the listener in polar coordinates. An a/v receiver then dynamically renders sound according to the current speaker configuration. The speaker layout employed by DTS:X is the sum of Dolby Atmos and Auro-3D. It has standard 7.1 channel base layer, a 5 channel height layer above the base layer on the front and side walls, and 3 rows of speakers on the ceiling.

• DTS Neural:X: DTS Neural:X is an advanced upmixer that can take non DTS:X content and upmix it to the DTS:X speaker layout. It has replaced the DTS Neo family with improved flexibility.
• DTS Dialog Control: This function adjusts the dialog levels during playback of the DTS:X stream. It allows you to separately increase the dialog levels in contrast with the background sound and hear dialog easily even under noisy circumstances.

Enhanced Audio Return Channel (eARC)

Audio Return Channel (ARC) feature allows the compatible TV to send audio signal to the a/v receiver through the same HDMI cable which is used to send audio and video signals to the TV. So one HDMI cable is used to transfer audio signal in both directions. New Enhanced ARC will support uncompressed audio formats such as Dolby Atmos, DTS:X, Dolby TrueHD and DTS HD Master Audio whereas the previous ARC could support only Dolby Digital, Dolby Digital Plus, DTS, DTS HD, and PCM.

Sound Processing

• Advanced Music Optimizer: Compressed music enhancement in Integra DRX-7.3 is done by Onkyo’s Advanced Music Optimizer. While MP3 or AAC files may sound fine through the headphones of your portable digital player, the limitations of these files can be exposed when played back through a quality home entertainment system. This is because a significant amount of high-frequency bit information is lost during the file-compression process. To counter this, Onkyo has designed the Advanced Music Optimizer to compensate for lost bit information and improve the quality of compressed audio signals. This results in a clearer and more expansive sound. Also included in this technology is a loudness correction feature that further improves the audio character of compressed files.

Room Calibration

Integra DRX-7.3 comes with AccuEQ Advance Plus 9-point calibration with subwoofer EQ and AccuReflex™ room correction system and includes the calibration microphone.

• AccuEQ: First, AccuEQ detects the presence of speakers and evaluates the impedance of each. Next, it pinpoints their distance relative to the main listening position using the mic and sets suitable sound-pressure levels. Then it selects the optimal crossover frequency so that deeper bass rolls smoothly off to the subwoofer. Finally, AccuEQ performs frequency response equalization based on room-acoustic and speaker data collected via microphone. The sound-field is now tailored around the listening position, resulting in a more immersive and realistic in-film experience.

HDMI

Integra DRX-7.3 features 7 HDMI inputs. It has 3 outputs: 1 Main and 1 Sub and 1 Zone2.

• 4K/60Hz Passthrough: All inputs pass up to 4K 50/60Hz 4:4:4 video signal.
• 4K Upscaling: Integra DRX-7.3 can upscale 1080p to 4K from HDMI and analog sources.
• Analog To HDMI Upconversion: The a/v receiver supports video upconversion, so you can connect your analog Component and Composite video sources and Integra DRX-7.3 will output them via HDMI. This means that you will need only one HDMI cable to connect to your TV.
• BT.2020 Color Space: BT.2020 or Rec. 2020 is a color standard which delivers a wider color gamut compared to Rec. 709. It covers approximately 75% of the total visual spectrum while the Rec. 709 covers only 35%.
• HDCP 2.3 Copy Protection: All inputs and outputs are HDCP 2.3 compliant which is a requirement for 4K/HDR copy-protected content transmission.
• 3D Ready: Integra DRX-7.3 is able to pass 3D video through HDMI.

HDR (High Dynamic Range)

Integra DRX-7.3 supports HDR (high dynamic range) video formats such as HDR10, Dolby Vision and Hybrid Log-Gamma. High dynamic range video has greater dynamic range than standard dynamic range (SDR) video with brighter whites and deeper blacks. The result is greater contrast and more details in dark and bright areas, better color and depth.

• HDR10: HDR10 uses the wide-gamut Rec. 2020 color space. It sends static metadata via video stream to the TV which calibrates its screen brightness and color according to that. HDR10 supports 10-bit color which corresponds to 1024 shades of the primary RGB colors. It is technically limited to a maximum of 10,000 nits peak brightness, however common HDR10 contents are mastered with peak brightness from 1,000 to 4,000 nits.
• Dolby Vision: Dolby Vision is a set of technologies developed by Dolby Laboratories for high dynamic range (HDR) video. It covers content creation, distribution, and playback. Like HDR10+, it includes dynamic metadata that are used to adjust and optimize each frame of the HDR video to the consumer display's capabilities in a way specified by the content creator. Dolby Vision allows for a maximum resolution of 8K up to 12-bit color depth, maximum peak brightness of 10,000 nits and a color gamut up to Rec. 2020. It uses Dolby's proprietary dynamic metadata defined in SMPTE ST 2094-10.
• Hybrid Log-Gamma (HLG): The Hybrid Log-Gamma (HLG) is a transfer function developed mainly for HDR live video feed and over-the-air broadcasts. It is an HDR format that uses BT.2020 color primaries and a bitdepth of 10-bit. It is backward compatible with the transfer function of SDR and is designed to be better-suited for television broadcasting, where the metadata required for other HDR formats is not backward compatible with non-HDR displays. HLG defines a non-linear optical-electro transfer function, in which the lower half of the signal values use a gamma curve and the upper half of the signal values use a logarithmic curve.

IMAX Enhanced

Integra DRX-7.3 is IMAX Enhanced certified. To qualify for IMAX Enhanced certification, 4K HDR televisions, projectors, sound bars, a/v receivers, loudspeakers, powered subwoofers and other premium home entertainment devices must meet carefully prescribed performance requirements established by IMAX, DTS and Hollywood's leading experts.

• What makes an IMAX Enhanced A/V receiver different from an A/V receiver with DTS:X technology? DTS:X technology is commonly found in most multi-channel A/V receivers on the market today. All IMAX Enhanced A/V receivers include DTS:X technology and deliver additional features, such as auto-sensing of IMAX Enhanced content, via IMAX Mode. IMAX Mode indicates that your A/V receiver supports fully immersive IMAX signature sound.
• IMAX Enhanced Content: IMAX Enhanced studio partners have announced IMAX Enhanced versions of movies that exclusively feature IMAX's signature picture, sound and scale.
• Picture: Stunning, ultra-vivid 4K HDR picture that utilizes the newest, proprietary Digital Media Remastering technology (DMR) developed by IMAX. DMR accurately reduces noise and grain under the filmmaker’s guidance to best optimize the content for a much higher-quality, higher-brightness display. Without this technology, high-dynamic range content can actually look worse than what was originally seen and intended by the filmmaker.
• Sound: IMAX and DTS have partnered with award-winning Hollywood sound mixers leveraging DTS:X codec technology integrated in home audio equipment and select televisions to deliver an IMAX signature sound experience with deeper bass and more dynamic range.
• Scale: Select IMAX Enhanced titles that were shot with IMAX-certified cameras or specially formatted for IMAX theatres feature its exclusive expanded aspect ratio, enabling viewers to see the full scale and scope of the picture on 4K HDR TVs.
• Streaming Services: IMAX Enhanced is now available on the world’s biggest streaming services, including Disney+, BRAVIA CORE, Tencent, iQiyi and more.

Integra DRX-7.3 offers multi-zone playback which allows you to play different input sources in 3 different rooms.

Zone 2

• Powered Zone 2: You can use the unit's 2 amplifier channels by connecting Zone 2 speakers directly to the speaker terminals. The remaining 7 channels will be left for main zone amplification.
• HDMI Output: Integra DRX-7.3 offers HDMI output for Zone 2. This means that it can send two different HDMI signals to two displays.
• Audio Pre/Line Output: If you have a dedicated amplifier for Zone 2 you can connect it to the a/v receiver via pre/line outs and use "pre out" option to control volume from the a/v receiver or use "line out" option - send fixed signal and then control volume on the Zone 2 amplifier.

Zone 3

• Powered Zone 3: You can use the unit's 2 amplifier channels by connecting Zone 3 speakers directly to the speaker terminals. The remaining 7 channels will be left for main zone amplification.
• Audio Pre/Line Output: If you have a dedicated amplifier for Zone 2 you can connect it to the a/v receiver via pre/line outs and use "pre out" option to control volume from the a/v receiver or use "line out" option - send fixed signal and then control volume on the Zone 3 amplifier.

Audio

• Analog Pre-Outs: Integra DRX-7.3 has 11.2 preamplifier outputs which allow you to connect the a/v receiver to the external power amplifier. You may want to use a high quality external amplifier for certain channels, usually for front L/R and center, and use the a/v receiver to power the rest. Also, Integra DRX-7.3 has 11 channel processing but has only 9 channel amplifier, so it needs the external amplifier connected to the analog pre-outs in order to reach the maximum speaker configuration.
• Analog Line Inputs: There are 6 line inputs for analog audio connection.
• Digital Inputs and Outputs: 1 optical input, 3 optical outputs and 2 coaxial inputs are available for digital audio connection.
• Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel.

Video

• HDMI:
Inputs: 7 (1 front)   Outputs: 3 (1 Main, 1 Sub, 1 Zone2)
8K Inputs: 0
• Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
Inputs: 2   Outputs: 0
• Component Video: Component video connection gives you the higher quality video compared to the composite video connection. So in case your old DVD player and other equipment do not have an HDMI output but have Component video output use this connection over the composite one. Integra DRX-7.3 supports up to 480i/576i resolution on Component video connectors.
Inputs: 2   Outputs: 0

Here we list all the available features and specifications of Integra DRX-7.3.

BASICS
Brand	Integra
Model	DRX-7.3
Type	A/V Receiver
Country	Australia
Release Year	2019

AMPLIFIER
Channels	9.2
Front Wide Channel Support
Amplifier	Hybrid Digital Low-Impedance, High-Current Amplifier
Non-Phase Shift Amplifier
VLSC (Vector Linear Shaping Circuitry)	All Channels
Optimum Gain Volume Circuitry
THX™ Certification	Select™ (previously known as Select2)
Continuous 6 Ω Rated
Certified 4 Ω Performance
Discrete Output Stage Circuitry
Bi-amp Capability

AUDIO
DAC	AKM AK4490 Stereo DAC for Front L/R 2 AKM AK4458 Multichannel DACs for Other Channels 2 AKM AK4388 Stereo DACs for Zone 2 and Zone 3
DAC Specs	384 kHz/32 Bit for Front L/R 768 kHz/32 Bit for Other Channels 192kHz/24 Bit for Zone 2 and Zone 3
Maximum Channel Processing	11.2
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
Music Playback via USB	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, MPEG-4 AAC
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
Gapless Playback
DSD via HDMI	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 circuitry for SPDIF digital audio
DTS Dialog Control
Dialog Enhancement
Dialog Normalization
Dialogue Lift
Tone Control	All Channels
Compressed Music Enhancer	Advanced Music Optimizer
High-resolution Music Enhancer
THX Processing Mode
Audyssey Dynamic EQ
Audyssey Dynamic Volume
Audyssey LFC
Audyssey Sub EQ HT
Audyssey DSX
Direct Mode
Pure Audio Mode
Virtual Speakers	T-D (Theater-Dimensional)
Independent Subwoofer Outputs

CALIBRATION
Auto Speaker Calibration System with Mic.	AccuEQ Advance Plus 9-point calibration with subwoofer EQ and AccuReflex™
Standing Wave Control	Standing Wave EQ
Distance Adjustment	0.1 - foot

VIDEO
Enhanced ARC
HDCP Version	2.3
HDR10
HDR10+
Dynamic HDR
Dolby Vision
HLG (Hybrid Log Gamma)
BT.2020 color space
QMS (Quick Media Switching)
ALLM (Auto Low Latency Mode)
VRR (Variable Refresh Rate)
QFT (Quick Frame transport)
DSC (Display Stream Compression)
3-D Ready
Video Signal Passthrough	up to 4K 50/60Hz 4:4:4
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

CONNECTIVITY
FlareConnect
Domotz Pro Compatible
Remote Monitoring with ihiji
OvrC Compatible
Chromecast Built-In
DTS Play-Fi
Works with Amazon Alexa
Google assistant
Apple Siri
Works with SONOS
AirPlay	AirPlay 2
Apple Product Connection	iPod, iPhone and iPad
Remote App	Integra Remote Control App
InstaPrevue Input Source Prevue
Ethernet
Ethernet Switch
Wi-Fi
Bluetooth	SBC, AAC
HDBaseT Compatible	In: 1 Out: 1 RS-232: 1 (Pasth through) IR In: 1 (Path through) IR Out: 1 (Path through) Maximum Video Resolution: 4K 60 Hz (YCbCr 4:4:4)
HDMI Inputs	7 (1 front)
HDMI Outputs	3 (1 Main, 1 Sub, 1 Zone2)
8K Inputs
USB Input	1 (Rear)
USB DC Out Port
RCA Line Input	6
RCA Line Output
XLR Line Inputs
Phono Input
Optical Inputs	3
Optical Outputs
Coaxial Inputs	2
Composite Video Input	2
Composite Video Output
S-Video Input
S-Video Output
Component Video Input	2
Component Video Output
PC In
Multi-Channel Input
RCA Pre-Outs	11.2
XLR Pre-outs
Front A/V Inputs	HDMI
Headphone Out	6.3 mm (1/4")

ZONES
Zones	3
Powered Zones	2 and 3
Zone 2 Outs	HDMI, RCA Pre/Line Out
Zone 3 Outs	RCA Pre/Line Out
Whole House Mode
RS-232C Interface
+12V Trigger Output	2 (A:100 mA, B:25 mA)
Remote (IR) Input/Output	3 / 2

MISC
On-Screen Display	High-definition transparent overlaid GUI with Quick Menu and Home Menu
GUI Languages	9
IP Control for CI
Control4 SDDP
Detachable Power Cord	Oversized AC Cord
RIHD (Remote Interactive Over HDMI)
Smart Grid-Ready

RADIO
Analog Tuner	FM/AM with RDS
Presets	40
Digital Radio
Internet Radio	TuneIn
Pandora
Spotify
Tidal
Deezer
Napster
SiriusXM Internet Radio

CONSTRUCTION
Front Panel	Audiophile Grade Anti-Resonant Aluminum Front Panel
Solid Aluminum Front
Speaker Terminals	11
Large Speaker Terminals	11
Color-Coded Speaker Terminals
Gold plated RCA terminals

POWER
Power Supply	AC 220-230/240 V, 50/60 Hz
Independent Power Supply	2
H.C.P.S. (High Current Power Supply)	Massive Custom Transformer
Toroidal Transformer
Power Consumption	310 W
Standby Power	0.2 W

GENERAL
ECO Mode / Hybrid Standby Function
Dimensions (W x H x D)	435 mm x 197 mm x 446.5 mm 17-1/8" x 7-3/4" x 17-9/16"
Dimensions of Package (W x H x D)	565 mm x 325 mm x 547 mm 22-1/4" x 12-13/16" x 21-9/16"
Weight	16.5 kg (36.4 lbs)
Weight of Package	19.0 kg (41.9 lbs)
Rack Mount Kit Available	IRK-180-4C
Warranty	3 Years

SPECS
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA)	240 W (10% THD)
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)	205 W (1% THD)
Multi Channel Simultaneous Drive (8 Ω, 1 kHz, 1.0%)	760 W (8 Ω, 1 kHz, 1.0%)
THD	0.05% (1 kHz, 100 W, 8 Ω)
Input Sensitivity and Impedance (Line)	200 mV/82 kΩ (Line)
Input Sensitivity and Impedance (Phono MM)	3.5 mV/47 kΩ
Rated Preout Level and Impedance	1 V/470 Ω
Rated Headphone Jack Output Level and Impedance	43 Ω
Rated Headphone Power Output	57 mW (32 Ω, 1 kHz, 10% THD)
Phono Overload	70 mV (MM, 1 kHz 0.5%)
S/N Ratio (Line, IHF-A)	107 dB
S/N Ratio (Phono MM, IHF-A)	90 dB
DSD Sampling Rates via HDMI	2.8 MHz
DSD Sampling Rates via USB	2.8 MHz, 5.6 MHz, 11.2 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/ac
Wi-Fi Terminal Frequency	5 GHz, 2.4 GHz
Bluetooth Version	4․2
Bluetooth Frequency	2.4 GHz
USB Terminal	Ver. 2.0, 5 V, 1 A
FM Frequency	87.5 MHz - 108.0 MHz
AM Frequency	522/530 kHz - 1611/1710 kHz

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

In 2023 Integra DRX-7.3 was replaced by DRX-8.4. Let us now have a look at some important changes that the successor brought.

UPGRADES	Integra DRX-8.4	vs	Integra DRX-7.3
More Channels	11.4	vs	9.2
Bi-amp capability	Front L/R and Center Channels	vs
Higher DAC Specs	768 kHz/32 Bit	vs	384 kHz/32 Bit for Front L/R 768 kHz/32 Bit for Other Channels 192kHz/24 Bit for Zone 2 and Zone 3
Auro 3D with Auro-Matic Upmixer		vs
Music Playback via USB	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, LPCM	vs	FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, MPEG-4 AAC
Dialog Enhancement		vs
More Advanced Auto Speaker Calibration System	Dirac Live™ Premium Licence	vs	AccuEQ Advance Plus 9-point calibration with subwoofer EQ and AccuReflex™
Newer HDCP Version	2.3	vs	2.3
HDR10+		vs
QMS		vs
Auto Low Latency Mode Pass-through		vs
VRR		vs
QFT		vs
DSC		vs
Video Signal Passthrough	up to 8K 48/50/60Hz RGB/YCbCr 4:4:4 12-bit and 4K 100/120Hz RGB/YCbCr 4:4:4 12-bit	vs	up to 4K 50/60Hz 4:4:4
Video Signal Upscaling	from 1080p and 4K up to 8K 50/60Hz and 4K 50/60Hz	vs	1080p to 4K
AirPlay	AirPlay 2	vs	AirPlay 2
More 8K Inputs	6	vs
Phono Input		vs
XLR Pre-outs	Front L/R, Center and 2 subwoofers	vs
+12V Trigger Output	3 (A:100 mA, B:25 mA, C:25 mA)	vs	2 (A:100 mA, B:25 mA)
More Speaker Terminals	15	vs	11
More Large Speaker Terminals	15	vs	11
Bigger Power Supply	1190 W	vs	310 W
Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA)	260 W (10% THD)	vs	240 W (10% THD)
Higher Rated Headphone Power Output	75 mW (32 Ω, 1 kHz, 10% THD)	vs	57 mW (32 Ω, 1 kHz, 10% THD)

DOWNGRADES	Integra DRX-8.4	vs	Integra DRX-7.3
HDBaseT Compatible		vs	In: 1 Out: 1 RS-232: 1 (Pasth through) IR In: 1 (Path through) IR Out: 1 (Path through) Maximum Video Resolution: 4K 60 Hz (YCbCr 4:4:4)
Less RCA Line Inputs	4	vs	6
Less Component Video Inputs	1	vs	2
Remote (IR) Input/Output	2 / 1	vs	3 / 2
Analog Tuner		vs	FM/AM with RDS
Higher THD	0.08% (20 Hz - 20 kHz, half power)	vs	0.05% (1 kHz, 100 W, 8 Ω)
Lower S/N Ratio (Phono MM, IHF-A)	78 dB	vs	90 dB

For more detailed comparison between the models please visit Integra DRX-7.3 vs Integra DRX-8.4.