Audio Section
Video Section
Network & Tuner Functions
Bluetooth/AirPlay/USB Integration
Multiroom Audio/Video Playback
Remote & App Control
Convenience Features

Audio Section

Dynamic Audio Amplification: The TX-NR595 AV receiver features Onkyo's Dynamic Audio Amplification with a 7-channel amplifier rated at 80 watts (into 8-ohms, at 20Hz-20kHz, with 0.08%, driving 2 channels). Onkyo's new Dynamic Audio Amplification technology incorporates a Hi-Current, non-phase shift amplifier design with discrete output stage circuitry and a H.C.P.S (High Current Power Supply) capable of driving 4 to 16-ohm speakers with dynamic control, while producing clear, detailed sound.

• Hi-Current Amp Design w/ Discrete Output Stage: The unique elements of Onkyo's Dynamic Audio Amplification system comprise high-current, low-impedance architecture with discrete output stage circuitry & custom audio capacitors for instantaneous high-current power and precisely control of your loudspeakers for dynamic, accurate sound.
• Non-Phase-Shift Amplification Circuitry: Onkyo's Wide Range Amp Technology (WRAT) circuit layout prevents phase shifting by pushing the roll-off point higher than the listening-level frequency. Amplifying sound without phase shift creates an uncommonly well-focused and realistic audio image.
• H.C.P.S. (High Current Power Supply): The receiver's High Current Power Supply (H.C.P.S.) transformer features an isolated power supply design and high-capacity filter capacitors to deliver large amounts of power necessary for reproducing the wide dynamics of movie soundtracks and the detail and clarity of your music.

Amplifier Assignment: The 7-channel amplifier can be configured in a variety of ways to match your type of speaker setup.

• 5.1.2ch + Zone 2: In this configuration, you can connect a Dolby Atmos 5.1.2ch speaker system in the Main Zone and a pair of speakers in Zone 2. When Zone 2 is off, all 5.1.2 channels will be used in the Main Zone. When Zone 2 is on, power to the two height speakers will be turned off and re-directed to the two speakers in Zone 2 and the Main Zone will receive only five channels of power for 5.1ch in the Main Zone. Or, you can choose not to connect Zone 2 speakers.
• 7.1ch + Zone 2: In this configuration, you can connect Front, Center, Surround, Surround Back, and Zone 2 speakers to the AV receiver. When Zone 2 is off, all seven channels will be used in the Main Zone. When Zone 2 is on, power to the two surround back (or front height) channels will be re-directed to the two speakers in Zone 2 and the Main Zone will receive only five channels of power for 5.1ch playback. Or, you can choose to not connect Zone 2 speakers.
• Front Bi-Amp (5.1ch): The Surround-Back/Height speaker terminals can be reassigned and used along with the Front terminals to bi-amp the front speakers, providing improved bass & treble performance. When bi-amping the front speakers the receiver is limited to a 5.1ch speaker system in the main room (no Surround Back, Front Height, or Zone 2 speakers)

32-Bit Architecture: The Onkyo TX-NR595 AV receiver utilizes 32-Bit architecture with Dual 32-Bit DSP Engines and a 384kHz/32-Bit Hi-Grade DAC for exceptional sound quality. The Onkyo TX-NR595 employs powerful and highly accurate 32-bit DSP (Digital Signal Processor) engines for better surround sound reproduction. The AV receiver also incorporates a premium-quality AK4458 digital-to-analog converter from Asahi Kasei for all channels. This 384kHz/32-bit DAC implements unique low-distortion filtering technologies for clear sound, and unlocks the full potential of of your high resolution multichannel audio formats - including Apple Lossless, FLAC, WAV, DSD, LPCM, Dolby TrueHD and DTS-HD.

Advanced Circuitry: The Onkyo TX-NR595 incorporates a variety of advanced circuitry to eliminate jitter & distortion for cleaner, clearer sound reproduction.

• Vector Linear Shaping Circuitry (Front Channels Only): Onkyo developed Vector Linear Shaping Circuitry (VLSC) to reassemble the signal in its original form following processing. Unlike conventional filters, VLSC removes pulse noise generated in D/A conversion, allowing the sound wave to be reproduced with extremely high fidelity for a smooth analog signal. The signal's data is converted between sampling points and joined with analog vectors in real time to produce a smooth output wave form. The result is a virtually noiseless, smooth, analog signal that brings out even the most subtle of nuances in music sources.
• PLL Jitter-Cleaning Circuit Technology: PLL (Phase Locked Loop) jitter-cleaning circuit technology reduces jitter by comparing the input and output phases of the digital signal and creating an accurate clock waveform. This enhances the precision of digital signal processing and noticeably improves audio quality. Jitter-cleaning technology works for S/PDIF audio signals only.

AccuEQ Calibration w/ AccuReflex: The TX-NR595 incorporates AccuEQ calibration technology and comes with an auto calibration microphone. AccuEQ calibration technology reveals the true potential of your speakers by eliminating standing waves from your listening space. These acoustic peaks distort the audio image and prevent your loudspeakers from voicing the sound as their designers intended. AccuEQ utilizes Partial Band Equalization and only corrects frequency response below a certain point, leaving high-order harmonics untouched - so your speakers are free to reproduce the emotion in the recording faithfully and naturally.

• Speaker Measurement: The first-round of AccuEQ measurements set the distance, sound pressure level, and crossover of your speakers. Distance and level calibration ensure all channels are treated equally. Crossover measurement selects the correct point to roll off low-frequency sound to the subwoofer for seamless speaker integration.
• Room Measurements: In the second round of AccuEQ measurements, your room's sonic characteristics are evaluated. Using this information, AccuEQ is able to prevent standing waves from forming by adjusting frequency response.
• AccuReflex Measurements: AccuEQ also incorporates AccuReflex technology to align the phase of up-firing "height" speakers with the sound coming directly from your other speakers. Any delay is resolved so that everything arrives at your ears at the same time. The result is cohesive reproduction of object-based soundtracks.

Compatible Digital Audio Formats: The AV receiver supports the following stereo & multichannel digital audio formats through its HDMI jacks and optical/coax digital inputs.

Immersive Surround Sound: The Onkyo TX-NR595 AV receiver goes beyond regular surround with the latest immersive surround sound formats, including Dolby Atmos and DTS:X. The Onkyo AV receiver also supports Dolby Surround & DTS Neural:X to enhance 2-channel and multichannel decoding formats. In addition, it supports Dolby Atmos Height Virtualization (future firmware update) and DTS Virtual:X for multi-dimensional sound from a standard 5.1 or 7.1ch setup.

• Dolby Atmos: Dolby Atmos surround sound technology dispenses with channel-based coding in favor of more advanced object-based coding, giving the soundtrack designer the ability to precisely place sounds anywhere in the 3-dimensional space. Now you can enjoy this same award-winning technology at home with the TX-NR595 that lets you connect a 5.1 surround sound speaker system and 2 additional overhead speakers or 2 Dolby Atmos elevation speakers for the ultimate home theater experience.
  • Dolby Surround: Dolby Surround offers an enhanced cinema experience to your 2ch or multichannel movie soundtracks using your existing 5.1ch, 7.1ch, or Dolby Atmos speaker setup. Dolby Surround enhances audio definition by improving the spatial dimension and overall audio definition of movie soundtracks. It does this by using four distinct surround zones that provide greater control over the exact placement of each detail in a movie sound track, so audio can be matched more accurately to the video on screen; this means more depth and greater realism for your movies. As a result, individual sounds are clearer and more distinct. It also improves the surround sound experience across the entire theater by widening the listening "sweet spot".
  • Dolby Atmos Height Virtualization (via available firmware update): Dolby Atmos Height Virtualization provides immersive audio without height-channel or overhead speakers, creating virtual height effects in a 5.1ch, 7.1ch or 2.1ch speaker arrangement. Dolby Atmos Height Virtualization applies carefully designed "height-cue" filters to the overhead audio components of your content's soundtrack before they are mixed into your loudspeakers to create the sensation of sound above you.
• DTS:X: The latest immersive surround sound system, DTS:X features object-based audio coding that lets the soundtrack designer place sonic elements anywhere in the 3D acoustic soundspace, and provides for overhead speakers to deliver a stunning surround sound experience. Along with DTS:X decoding, the TX-NR595 features DTS-HD Master Audio decoding and other DTS audio technologies.
  • DTS Neural:X: DTS Neural:X is an advanced spatial remapping technology from DTS, which provides a fully immersive output for all types of source content; this includes DTS bitstreams and non-encoded (PCM) data. DTS Neural:X delivers a thrilling sense of immersive sound to your speaker layout regardless of the original source format.
  • DTS Virtual:X : DTS Virtual:X bridges the gap between DTS:X and the reality of so many consumers' homes that cannot accommodate overhead speakers, allowing you to enjoy multi-dimensional sound regardless of room size, layout, or speaker configuration. DTS Virtual:X can be used with any content (from 2ch to 7.1.4ch soundtracks), while delivering virtual height & virtual surround processing based on psychoacoustics (not reflective surfaces).

Onkyo Original DSP Modes: Onkyo's Original DSP Modes, combined with Dolby Digital & DTS processing, produce more realistic, powerful sound effects for your movie and music sound tracks based on the type of content and your home theater setup. You can choose from the following:

• Orchestra: Suitable for classical or operatic music. This mode emphasizes the surround channels in order to widen the sound image, and simulates the natural reverberation of a large hall.
• Studio-Mix: Suitable for rock or pop music. Listening to music in this mode creates a lively sound field with a powerful acoustic image, like being at a club or rock concert.
• TV Logic: Suitable for TV shows produced in a TV studio. This mode enhances the surround effects to the entire sound to give clarity to voices and create a realistic acoustic image.
• Unplugged: Suitable for acoustic instruments, vocals and jazz. This mode emphasizes the front stereo image, giving the impression of being right in front of the stage.
• Multichannel (Multich)/Game:   Multichannel mode is suitable for playing sources recorded in multichannel PCM. The receiver also offers four different Gaming modes - RPG, Action, Rock, and Sports.
• Stereo/All Channel Stereo (AllCh Stereo): In Stereo mode, sound is output from the front left and right speakers and subwoofer. In All Channel Stereo Mode, stereo sound is output from all speakers - ideal for background music.
• Mono/Full Mono: In Mono mode, when the input signal is analog or PCM, the left and right front speakers output the sound in monaural. In Full Mono mode, all speakers output the same sound in mono, so the sound you hear is the same regardless of where you are within the listening room.
• Theater-Dimensional (T-D): In this mode, you can enjoy a virtual playback of multichannel surround sound even with only two or three speakers. This works by controlling how sounds reach the listener's left and right ears

Direct Mode: The Direct listening mode can be selected for all input signals. In this mode, processing that affects sound quality is shut down, and sound closer to the original is reproduced. The sound is reproduced with the soundfield based on the number of channels in the input signal. For example, a 2ch signal is output only from the front speakers. Note that other sound adjustments are not available when this mode is selected.

Audio Enhancements: The Onkyo TX-NR595 receiver provides various audio enhancements to deliver a high-quality listening experience every time.

• CinemaFilter: The CinemaFilter softens overly bright movie soundtracks. Movie soundtracks are typically mixed for a large theater (relative to your home theater) with lots of soft seats and thick curtains on the walls. Home theater settings often lack these high frequency absorbing wall treatments, making the soundtrack sound too bright. CinemaFilter accounts for this and for many movies sounds more natural at home.
• Music Optimizer: The Music Optimizer function enhances the sound quality of compressed music files. The Music Optimizer function only works with PCM digital audio input signals with a sampling rate below 48kHz, analog input signals, and Bluetooth audio.
• Late Night Feature: The Late Night feature limits the dynamic range of Dolby Digital recordings. Limiting the dynamic range makes it easier to find a volume that ensures the quiet sounds are not too quiet and the loud sounds are not too loud for night time listening. This allows you to comfortably listen to without the need to constantly adjust the volume to keep from waking family/neighbors. The choices are: Off, Low, and High. This feature only works with Dolby Digital Encoded software and the depth of the feature will vary based on the individual software package.

Dialog Improvements: The receiver offers a variety of dialog enhancements that make it easier to hear dialog and vocal when listening to movie and music soundtracks. The Vocal mode emphasizes movie dialog and music vocals, so you can hear them more easily amongst the movie effects and musical instruments. The Vocal mode can be set from 1 (low) to 5 (high). Dialog Control allows you to boost the dialog in a DTS:X soundtrack to make dialog more intelligible in noisy environments. Center Spread expands the center channel signal to left and right front speakers to create a wider frontal audio image for the listener, when in Dolby Surround mode.

Bass Management: The Onkyo AV receiver offers Phase-Matching Bass, Double Bass, and Tone Control to get the most bass impact out of your system. Onkyo's Phase-Matching Bass optimizes low frequencies while preserving mid-range clarity. This means that powerful bass plays back with clear vocals; it doesn't overpower them. You can also activate the Double Bass function in order to boost bass output even more by feeding bass sounds to the front left/right speakers, center-channel, and powered subwoofer. In addition, you can independently adjust the Bass (20Hz) and Treble (20kHz) of the receiver's Front L/R channels from -10 to +10 dB.

ARC (Audio Return Channel): The receiver's main HDMI monitor output features ARC (Audio Return Channel). This feature allows audio to be sent from your compatible TV to your receiver through the same HDMI cable already being used to send audio and video to your TV. This eliminates the need for extra cables connected to your television. The receiver's sub HDMI out does not support HDMI.

Volume & Level Setup: The Onkyo AV receiver provides the following volume & level settings.

• IntelliVolume: With IntelliVolume, you can set the input level for each input (-12 to +12dB) selector individually. This is useful if one of your source components is louder or quieter than the others. This function does not work in Zone 2.
• Maximum Volume: Use this feature to set the receiver's maximum volume level for the Main Zone and Zone 2. This feature is useful to avoid turning the volume too loud by mistake. You can set the Max Volume from 50-99, or Off (disabled).
• Power On Volume: Use this feature to set the volume level when the power is turned on in the Main Zone and Zone 2. You can choose between Last (same as the volume when the unit was turned off), Min, or 1-99, or Max.
• Mute Level: Set the volume lowered from the listening volume when "Mute" is selected. Choose from 0, -40dB, or -20 dB.
• Headphone Level: With this setting, you can specify the headphone volume (-12 to +12dB) relative to the main volume. This is useful if there's a volume difference between your speakers and your headphones.

Analog Audio Outputs: The Onkyo TX-NR595 is outfitted with the following analog audio outputs.

• Binding-Post Speaker Terminals: There are binding-post terminals for all speaker connections - Front, Center, Surround, Surround Back/Height, and Zone 2. The binding post terminals will accept bare-wire (up to 10AWG), pin-connectors, and banana plugs (single only). Use 4- to 16-ohm speakers (there is an impedance setting in the receiver's menu).
• Dual Subwoofer Outputs: The receiver is fitted with two subwoofer outputs to connect dual powered subs for extra bass. The dual outputs are wired in parallel and share the same input signal (they are not discrete).
• Headphones: When headphones are plugged into the full-size 1/4" jack on the front panel, all the speakers are automatically muted. The receiver supports headphones with impedances of 8 to 600-ohm.

Phono Input: The TX-NR595 has a discrete low-noise phono pre-amp and is outfitted with Phono (MM) input for connection of a turntable with a moving magnet cartridge so you can enjoy listening to your vinyl records. There is also a ground screw terminal.

Front-Panel Aux Input: The TX-NR595 is fitted with a front-panel 3.5mm Aux input for connecting a portable audio player.

Video Features

HDMI 2.0b: The Onkyo TX-NR595 has six HDMI 2.0b inputs and two HDMI 2.0b outputs. The dual HDMI outputs can simultaneously output the same audio/video signal to two TVs, or you can assign the second HDMI output to Zone 2 to display a different HDMI source (1-2-3 inputs) in another room; video is output at the resolution supported by both TVs. Thanks to its HDMI 2.0b specification, the receiver can support 4K/60 Hz Ultra-HD video, HDCP 2.2 compatibility, 4:4:4 color sub-sampling, High Dynamic Range (HDR), and BT.2020 Wide Color Gamut.

• 4K/60Hz w/ Upscaling: The TX-NR595 supports up to 4K (3840x2160 or 4096x2160 pixels) video @ 60 frames per second on all of its HDMI inputs and output. It will also pass a 480p, 720p, 1080i, or 1080p video signals via HDMI (not compatible with 480i video signals). The receiver can even upscale 1080p HDMI input video sources to 4K Ultra HD (3840x2160 pixels) through its main HDMI monitor output (the sub HDMI output does not support upscaling).
• HDCP 2.2 Compliance: The receivers HDMI inputs and HDMI monitor outputs support the latest HDCP 2.2 certification, which fully complies with the latest copyright protection standard for 4K video transmission. The unit will offer HDCP 2.3 support via a future firmware update (no ETA).
• 4:4:4 Color Subsampling: The receiver's HDMI inputs and HDMI monitor outputs support RGB/YCbCr 4:4:4 (8-bit), YCbCr 4:2:2 (12-bit), and YCbCr 4:2:0 (8/10/12-bit) color subsampling in 4K @ 60Hz/50Hz; or RGB/YCbCr 4:4:4 (8/10/12-bit) and YCbCr 4:2:2 (12-bit) in 4K @ 24/25/30Hz. With 4:4:4 color subsampling, luminance (brightness) and chroma (color) are sampled at the same rate; resulting in an RGB color palette as big as the video sampling rate for a video image with more colors, plus greater color accuracy and detail.
• Wide Color Gamut (BT.2020): The BT.2020 color standard delivers a much wider color gamut and represents about 75% of the total visual color spectrum, while the current Rec. 709 color standard selected as the color space for HDTVs and early generation 4K Ultra HDTVs covers only 35% of the total visual color spectrum.

HDR (High Dynamic Range): HDR (High Dynamic Range) video provides enhanced picture quality by simultaneously enabling greater detail for both the dark and bright parts of an image. HDR reproduces a greater dynamic range of luminosity or brightness levels, creating greater contrast. This increased contrast reveals the subtle nuances of the image, from detailed blacks and shadows to the brightest whites and colors, plus greater depth. This receiver supports two HDR formats - HDR 10, Hybrid Log-Gamma (HLG), & Dolby Vision.

• HDR 10: HDR 10 is an open standard and currently the most popular HDR format on the market. It uses static metadata at the start of a movie to tell the receiver and your TV that the video content is encoded using HDR.
• Hybrid-Log Gamma: HLG (Hybrid-Log Gamma) is primarily designed for live video feed and over-the-air broadcasts. It uses no pre-encoded metadata and is backwards compatible with SDR. HLG's native compatibility allows much of today's existing SDR infrastructure to be re-used for HDR in the future.
• Dolby Vision: Unlike HDR 10 which contains static metadata and HLG which uses no metadata, Dolby Vision uses dynamic metadata technology which sets individual color and brightness levels for each and every scene. Dolby works directly with filmmakers at major Hollywood studios to create superior HDR video masters of blockbuster movies.

Other HDMI Features: The TX-NR595 AV receiver's HDMI connectivity also offers 3D video pass-through, Deep Color & x.v. Color support, as well as an auto LipSync function.

• Deep Color & x.v.Color Support: The AV receiver supports Deep Color and x.v.Color content, which can display a larger color range than standard-definition schemes. The result is a more lifelike, vibrant picture
• 3D-Ready: All HDMI jacks will accept 3D video from your 3D-ready Blu-ray player and output the video signal in 3D to your 3D-ready flat-panel television.
• AV Sync: The AV Sync feature can automatically synchronize HDMI audio and video (for any HDMI jack) that has gotten out of sync due to the complex digital video processing being performed by your HDMI-compatible TV. With AV Sync, the audio delay required to synchronize the audio and video is calculated and applied automatically by the AV receiver. You can also manually correct the audio delay using AV Sync.

HDMI Through: When enabling the HDMI Through function, regardless of whether the AV receiver is "O" or in "Standby", both audio/video streams from an HDMI input will be output to your television, via the receiver HDMI monitor output. You can select between three HDMI Through modes.

• Auto: Detects the signal and automatically selects the input sources.
• Source: Selects the HDMI input source for which the HDMI Through function in enabled.
• Last: The HDMI Through function is activated on the input source selected at the time of setting the AV receiver to the "standby" mode.

Video Select: It is possible to play audio and video from different sources simultaneously. For example, you can play audio via Bluetooth and video from your BD/DVD player. This function is only effective when an input with audio only (Network, Bluetooth, or Tuner) has been selected initially.

Network & Tuner Functions

Wired or Wireless Network Connection: The Onkyo TX-NR595 AV receiver supports a wired Ethernet (RJ-45) or wireless WiFi (802.11 a/b/g/n; 2.4/5GHz) network connection. Via the AV receiver's network connection, you can enjoy music files stored on your computer and listen to internet radio through a variety of online music services.

• Ethernet (LAN) Jack: The Onkyo AV receiver is equipped with an Ethernet (RJ-45) jack for connecting the player to your home network and computer. Connecting the A/V receiver's Ethernet port to a 100Base-TX switched Ethernet network is recommended for best results. Use a shielded CAT-5 Ethernet cable to connect the receiver to your home network.
• Built-in Wireless LAN: The AV receiver also features built-in WiFi that allows you to wirelessly connect to your home network, so you can enjoy the benefits of a cable-free network environment. A wireless connection requires a home network with a WiFi-enabled access point (IEEE 802.11 a/b/g/n; 2.4/5GHz). Supports WPS, WEP, and WPA security.

DLNA Certified: Because the TX-NR595 is DLNA (ver.15) certified, you can play back music files stored on your Windows  PC (w/ Windows Media Player 11 or 12) or a DLNA compliant media server through the stereo receiver. You can control basic playback functions of your music library from the included remote control and receiver's on-screen menu; such as Folder/File Select, Play/Pause, Stop, Fast Forward/Rewind, Previous/Next Track, and Repeat/Random. Compatible music files include -

• Hi-Res Music Files: FLAC (8/16/24-bit; 44.1-192kHz), WAV (8/16/24-bit; 44.1-192kHz), AIFF (8/16/24-bit; 44.1-192kHz), ALAC (16/24-bit; 44.1-96kHz), DSD (1-bit; 2.8/5.6MHz)
• Low-Res Music Files: MP3 (8-320kbps; 44.1-48kHz), WMA (5-320kbps; 44.1-48kHz), AAC (8-320kbps; 44.1-96kHz)

Built-in Online Music Services: The Onkyo TX-NR595 offers several built-in internet radio & online music services through its wired or wireless network connection that can be accessed directly from the receiver's on-screen menu and remote control. Subscription and purchase fees may apply.

• Pandora: Pandora is a personalized Internet radio service that plays the music you know and helps you discover music you'll love. You can select Internet radio stations by Artist, Song, or Genre.
• Tidal: Tidal is a global streaming service that offers over 30 million songs in high-fidelity CD sound quality. Tidal has two pricing tiers; either $9.99 or $19.99 a month. Both pricing levels allow you to access Tidal's entire music library. The $19.99 tier has the added benefit of high-fidelity sound at CD-level quality.
• TuneIn: With more than 100,000 radio stations and 2 million on-demand programs registered, TuneIn is a service where you can enjoy music, sports and news from all over the world.
• Deezer: Deezer is an online music service offering over 43 million tracks starting at $9.99 a month. Discover the perfect playlist or make your own, as well as browse curated collections by genre.
  

Amazon Music: Amazon Music is accessible from the Onkyo Controller app (for Apple iOS 8.0+ & Android OS 4.0.3). Amazon Music is a subscription based on-demand music streaming service. With an Amazon Music subscription, you get access to tens of millions of songs, thousands of paylists hand-curated by Amazon's music experts, and personalized stations.

Spotify Connect: The integration of Spotify Connect will enable Spotify Premium users to instantly select and wirelessly stream music to the Onkyo AV receiver from within the Spotify app (Apple iOS or Android). Spotify is a digital music service that gives you on-demand access to one of the largest music libraries in the world (over 15 million tracks and counting). Spotify makes it easier than ever to discover, manage, and share music with your friends. You can browse music by artist, album, track, or most popular; and create your own music library with customized playlists.

AM/FM Tuner: With the built-in tuner you can enjoy AM and FM radio stations. You can store your favorite stations as presets for quick selection. You can store a combination of up to 40 of your favorite FM/AM radio stations as presets.

Bluetooth/AirPlay/USB Integration

Built-in Bluetooth: The Onkyo TX-NR595 features built-in Bluetooth (version 4.1+LE) with support for profiles A2DP 1.2 and AVRCP 1.3. You'll be able to wirelessly stream stored music and music apps from your Bluetooth-enabled smartphone, tablet, laptop, or computer to the Onkyo receiver. The receiver has a 48' wireless Bluetooth range. You can even set the receiver to automatically turn on when a Bluetooth source device is paired and connected.

• SBC + AAC Codecs: In addition to support for the standard SBC Bluetooth audio codec, the TX-NR595 offers support of AAC.  By supporting AAC, the receiver offers better audio performance of the music streamed from your Apple iPod, iPhone, or iPad.
• Playback Control: You can use the receiver's IR remote control to operate basic playback functions, like Play/Pause & Previous/Next Track. Advanced music browsing will still need to be handled from your Bluetooth-enable device.
• Song/Artist Information: The receiver will display song/artist information on its front-panel LCD and through its on-screen on your HDMI-connected TV. Album Art is not supported.

AirPlay 2 (future firmware update): AirPlay 2 is an advanced and easy-to-use wireless multiroom audio platform for iTunes, Apple Music, and other compatible Apple iOS apps. With AirPlay 2 you can play any sound from your Apple iOS device (running iOS 11.4 or later) or Mac computer (running OS X 10.13.2) on the Onkyo receiver and other compatible AirPlay 2 speakers throughout your home. You will also be able to ask Siri-enabled devices (like your Apple iPhone, iPad, or Watch) to control playback of your Apple Music on the Onkyo receiver. With AirPlay 2, also get to see song/artist information and album art via the receiver's on-screen menu (via HDMI). You can choose to play audio in one room, play the same audio in grouped rooms, or play the same audio in every room (you can control and group directly from Apple's Music App and Home app on your Apple iOS device). You can even watch videos and movies from YouTube and Netflix on your compatible Apple iOS device or Mac computer with perfectly synced audio on the Onkyo receiver.

USB Mass Storage Class: This AV receiver is equipped with a rear-panel USB (type-A) port that allows you to enjoy a variety of music files from a USB mass storage class memory device, such as USB thumbdrive or portable digital audio player. The unit will recognize USB MSC devices formatted in FAT16 or FAT32 with up to 20,000 music files.  You can control basic playback functions of your music library from the included remote control and receiver's on-screen menu; such as Folder/File Select, Play/Pause, Stop, Fast Forward/Rewind, Previous/Next Track, and Repeat/Random. USB portable audio players that can be charged via USB will be charged when plugged into the AV receiver's USB port (5V/1A); even in standby mode. Compatible music files include -

• Hi-Res Music Files: FLAC (8/16/24-bit; 44.1-192kHz), WAV (8/16/24-bit; 44.1-192kHz), AIFF (8/16/24-bit; 44.1-192kHz), ALAC (16/24-bit; 44.1-192kHz), DSD (1-bit; 2.8/5.6MHz)
• Low-Res Music Files: MP3 (8-320kbps; 44.1-48kHz), WMA (5-320kbps; 44.1-48kHz), AAC (8-320kbps; 44.1-96kHz)

Multiroom Audio/Video Playback

Zone 2 HDMI Output: The Onkyo TX-NR595 provides a Zone 2 HDMI output, so two different HDMI audio/video feeds can be sent to two different displays at the same time directly from the receiver (HDMI 1-2-3 connected input sources only). HDMI Zone 2 will output up to 4K video and 2-channel audio for the HDMI input source selected. Video will be output at the highest resolution supported by both TVs. If you have the same HDMI source playing back in the main room and Zone 2, then the main room is also limited to 2ch PCM audio.

• Compatible Sources: HDMI 1-2-3 connected input sources only (up to 4K/2ch PCM).
• Incompatible Sources: Tuner, Analog, USB, Bluetooth, Network, and Optical/Coaxial Digital audio sources; plus HDMI 4-5-6 inputs.

Zone 2 Speaker Outputs: By using the Zone 2 speaker-level outputs on the TX-NR595, you can directly connect a secondary pair of speakers in another room of your home, allowing you to listen to 5.1ch surround sound in your main room and play a different audio source in the other room.You can play the same audio source in both Zones (Main & Zone 2) or play a different audio source in each zone. Zone 2 is compatible with analog and wireless audio sources - see below for details.

• Compatible Sources: Zone 2 compatible sources includes AM/FM tuner, Analog audio inputs, Optical/Coax digital inputs (2ch PCM only), HDMI 1-2-3 inputs (2ch PCM only), USB & Bluetooth Audio, Network (including DLNA, AirPlay, DTS Play-Fi, FlareConnect, & built-in music apps).
• Incompatible Sources: Incompatible Zone 2 sources include HDMI video (all inputs), HDMI audio (4-5-6 inputs), and DSD audio files.

Zone B Preamp Outputs: The receiver provides a Zone B preamp output that lets you connect a separate amplifier and pair of speakers in a second room so you can enjoy the same source of your Main Zone in another room, or turn the Main Zone off and only listen to an audio source in Zone B. When the Main Zone and Zone B are played at the same time, you are limited to 2ch Stereo or All-Channel Stereo in the Main Zone. The volume level of Zone B is controlled from your external Zone B integrated amplifier.

DTS Play-Fi (Firmware Update Available): DTS Play-Fi combines DTS and WiFi to wirelessly stream high quality audio through out your home using the Play-Fi app for Apple iOS 10.2+, Android OS 5.0+, & Windows 7 PC or later. Supported music formats up to 24-bit/192kHz (including MP3, AAC, FLAC, WAV) are wirelessly streamed to the receiver or to multiple DTS Play-Fi players at up to 16-bit/48kHz (CD quality sound). You can connect multiple DTS Play-Fi products together from different brands and manufacturers on the same home network to create a whole-home streaming experience. Play the same source in every room or a different song in each room. Due to the bandwidth limitations of most wireless networks, no more than 16 wireless DTS Play-Fi products on a single WiFi network at one given time is recommended. DTS Play-Fi has a range of up to 100' from your wireless router. Compatible sources include -

• Source Devices: DTS Play-Fi provides you with the ability to stream your music wirelessly in high-quality lossless audio from Apple iOS & Android devices, Windows laptops & desktop computers, as well as DLNA-servers on your existing home WiFi network to the Onkyo receiver. Up to eight separate wireless source devices, each with its own source, are supported simultaneously and any wireless source device can stream to eight DTS Play-Fi playback devices.
• Online Music Services: DTS Play-Fi enables wireless audio streaming from the world's most popular music services, including - Pandora, SiriusXM, TIDAL, Amazon Music, iHeartRadio, Napster, & more.
• DTS Play-Fi Compatible Products: All DTS Play-Fi enabled products work seamlessly together, so there's no hassle adding more components, or choosing more than one audio brand (like Onkyo, Integra, Klipsch, MartinLogan, McIntosh, Paradigm, Phorus, Polk Audio, SVS, Wren, and more) in your home.

Works With Sonos: Instantly upgrade the music streaming capability of your Onkyo receiver with Sonos Port (sold separately) and a free over-the-network firmware update. With the Sonos Port connected to the Onkyo receiver via a set of stereo RCA cable, the audio system you've built around the receiver can now be part of a Sonos Wireless Multiroom Audio System (components sold separately). After a simple set up, the Onkyo receiver will seamlessly tie into Sonos, instantly turning on from network standby, changing inputs and playing at the volume you command through the Sonos controller app on your compatible Apple iOS or Android device.

• Functionality: Once the Onkyo receiver is connected to the Sonos Port you will be able to send any music or source on the Sonos app to the receiver. You will also be able to group the receiver to other Sonos devices on the network or use it independently. Whenever you start playing music back from your Sonos app and the Onkyo receiver is selected, the receiver will automatically turn on and switch to the correct input.
• Compatibility: The Onkyo receiver can be used with a single Sonos speaker or any combination of Sonos speakers (all sold separately). You can even use the Onkyo receiver with a Sonos soundbar speaker (sold separately) that is located in a different room. Just remember that you need to have a Sonos Port to connect the Onkyo receiver to the Sonos multiroom audio system.

FlareConnect MultiRoom Audio: FlareConnect powered by Blackfire mirrors network audio sources and any external analog source playing through the receiver (from streaming audio to vinyl) on optional FlareConnect wireless speakers (such as the Onkyo NCP-302, sold separately). Sampling rates up to 48 kHz are supported. FlareConnect powered by Blackfire is stable, fast, and easy to control with Onkyo's Controller app (for Apple iOS 8.0+ & Android OS 4.0.3).

Remote & App Control

Onkyo Controller App: The Onkyo Controller app (for Apple iOS 8.0+ & Android OS 4.0.3) features an intuitive, user-friendly interface that allows you to conveniently operate the Onkyo receiver from your compatible Apple iOS or Android device. This app not only has the usual remote control functions, it also has a multiroom functionality for Zone 2 and wireless multiroom audio setups.

• Remote Control: You can operate general control functions (play/stop, control the volume, select the input source, etc.) from your compatible smartphone or tablet.
• Source Device Playback: Operation of connected products (like a Blu-Ray player or TV) that are connected to the receiver via HDMI.
• Streaming Audio: Lets you play audio from select streaming music apps (such as Amazon, Pandora, Tidal), the music library on your Apple iOS or Android device, and your Windows PC or other DLNA-compatible server.  You can also access music from Bluetooth and USB source devices.
• Multiroom Audio: Provides control over Zone 2 and wireless multiroom audio (such as FlareConnect by Blackfire).

IR Remote + HDMI-CEC: The Onkyo TX-NR595 comes with an IR remote control for wireless operation of this receiver and supports HDMI-CEC (Consumer Electronic Control). HDMI-CEC provides linked control between HDMI-CEC connected devices. Supported HDMI-CEC functions include auto input switch when a Blu-ray player begins playback, switching of audio output between the TV and this receiver or adjusting the receiver's volume using the remote controller of your TV, as well as automatically switching the receiver to standby when the TV is turned off.

Web Control: When connected to your home's wired or wireless network, you can setup the Onkyo AV receiver with the web control screen displayed in your PC's web browser. 

Convenience Features

On-Screen Menu w/ Setup Assistance (HDMI only): The Onkyo AV receiver offers an on-screen (GUI) menu system through its HDMI output. The simple on-screen display combines text and graphics that make setup and other operations extremely easy. The initial setup assistant takes you step-by-step through speaker configuration, source connection, remote programming, and network connection.

Gapless Playback: Many live and classical albums have no gaps in the music. Gapless playback ensures that there are no pauses between audio files. This provides playback with no interruptions, the way it was meant to be heard. Compatible with WAV, FLAC, and ALAC music files via USB.

Name Edit: You can enter a custom name for each individual input selector and radio preset for easy identification. When entered, the custom name will appear on the display. This function cannot be used for the AM/FM, Network, USB, and Bluetooth input selectors.

Timers: The receiver features a programmable Auto Standby function & programmable Sleep Timer. The AV receiver will automatically go into Standby mode, if there is no operation for 20 minutes with no audio/video signal input. From the remote, you can set the unit to automatically turn off after 30, 60, or 90 minutes.

Firmware Updates: Future firmware updates are available from the Onkyo website through the receiver's Network or USB connection. Visit Onkyo's online Download Center for the latest firmware updates.