Audio/Video Section

Class AD Amplifier: The HiFi Rose RS520 employs a state-of-the-art stereo Class AD Amplifier which combines the benefits of Class A, Class AB, and Class D amplifier technologies without any of the limitations. The Class AD Amplifier uses a new GaN FET material instead of the commonly used Silicon FET to solve the limitations of previous amplifier designs. This Class AD amplifier design dramatically reduces "dead-time" by 1/3, improving linearity to create a near-perfect sound that exceeds the boundaries between digital and analog amplifier technologies. As a result, all you'll hear is a smooth and natural sound from your music.

• Discrete OP Amp: The HiFi Rose RS520 incorporates a discrete operation amplifier that is focused on high open loop gain aimed to achieve low distortion, low noise, low drive, and low offset. In addition, the operational amplifier has a wide bandwidth and power supply range essential for high-quality analog audio amplification, adding a sense of depth to the sound.
• Active PFC: The main reason for applying power factory correction (PFC) is efficiency improvement. By adopting an Active PFC technique, the RS520 effectively delivers 95% power saving efficiency. In addition, it can respond more effectively to a wide range of input power of AC (80-265V), so the power quality can be improved with no audible audio hum noise.

Equalizer: The RS520 features a built-in Equalizer (EQ) that can emphasize or attenuate specific frequency bands of an audio signal. The RS520 EQ is a parametric-type equalizer that can set the frequency band for amplification and attenuation arbitrarily, and can adjust the bandwidth of the Q-Factor for each frequency. Five frequency bands can be set and each can be adjusted +10dB or -10dB.

All-In-One Aluminum Housing: The housing of the RS520, which made with high-durability 6000 class aluminum material, is manufactured by an all-in-one process in which all four sides are produced as one part. The all-in-one manufacturing process is the most ideal method to fundamentally block vibrations that may occur between separated parts, significantly reducing noise waves that can affect sound quality.

ES9038PRO DAC: The HiFi Rose RS520 is equipped with the ESS technology's flagship DAC (digital-to-analog converter) chip, the ES9038PRO. The ES9038PRO has extremely low total harmonic distortion with low noise and high dynamic range, making it one of the industry's best DAC chip. The maximum sampling frequency and bit rate of the ES9038PRO is 32-bit/768kHz with DSD512 and MQA supported. In addition, it is equipped with ESS technology's exclusive jitter canceler to provide exceptional audio clarity.

• MQA: The integration of MQA technology enables you to playback MQA audio files and streams, delivering the sound of the original master recording. MQA is a revolutionary end-to-end technology that captures and delivers master quality audio in a file that's small enough to stream or download. MQA lets you hear your streamed digital music files exactly like the way the artist intended you to hear it when it was approved in the studio.
• Native DSD: DSD is high-resolution digital audio format that uses a single bit to deliver a high resolution signal. Instead of sampling the information several thousand times a second, this single bit samples 2.8 million times a second to generate the audio signal. The result is still a Hi-Res audio signal that clean and pure. The RS520 supports DSD64 (2.8MHz), DSD128 (5.6MHz), DSD256 (11.2MHz), and DSD512 (22.4MHz).
• PCM: The HiFi Rose RS520 also supports linear PCM audio files with a bit depth of 16- / 24- / 32-bits, and a sampling frequency of 8Hz to 768kHz.
• Other File Types: Other supported audio file type include AAC, ALAC, AIFF, WAV, FLAC, WMA, MP3, APE, DFF, DSF.

USB Ports: The HiFi Rose R520 is outfitted with two rear-panel USB-A 3.0 ports and a rear-panel USB-B port. The USB-A and USB-B ports support playback of a variety of audio files including MQA, PCM (up to 32-bit/768Hz) , DSD (up to 22.4MHz), WAV, FLAC, WMA, MP3, AAC, AIFF, ALAC, APE, DFF, and DSF. The USB-A port also support video file playback including ASF, AVI, MKV, MP4, WMV, MPEG-1, MPEG-2, MPEG-4 H.263, H.264, H.265, and more (up to 4K).

• USB-B (Audio Only): The USB-B port allows you to connect a Windows PC (7-up) or Mac (OS X) computer for playback of your stored digital music library on the RS520 integrated amp.. A separate USB audio driver will need to be installed on your Windows PC. A mac computer will not require a separate USB driver.
• USB-A (Audio/Video): Both USB-A 3.0 ports support connection of a USB MSC (mass storage class) device - up to 512GB, or HDD (hard disk drive) - up to 10TB. The USB MSC device or HDD must be formatted in NTFS or FAT32. Some HDD's will require an external AC power supply.

Optional CD Drive: Connecting the optional HiFi Rose RSA780E CD drive (sold separately) to one of the RS520's USB-A 2.0 ports allows you to rip Audio CD's to a connected USB MSC device or HDD (hard disk drive).

SSD (Solid State Drive): The RS520 allows you to connect an external SSD (Solid State Drive) to its bottom panel. It can support SSD's up to 4TB and 2.5" (7mm) thick. Four screws are included for installation of an external SSD (sold separately - not available at Crutchfield).

HDMI Input/Output: The RS520 integrated amplifier is outfitted with an HDMI ARC jack and a HDMI 2.0 video output. The HDMI ARC jack receives an audio signal (2ch PCM only) from your connected TV's HDMI ARC input. This allows you to watch TV, while listening to the audio signal through the RS520 and your connected audio system. The HDMI 2.0 video out lets you transmit a video signal (up to 4K) from the RS520 integrated amp to your TV's HDMI input. You'll be able to watch video from RoseTube, USB-A, and SSD on the big screen.

Digital Inputs & Outputs: The RS520 integrated amp is equipped with an optical (toslink) digital input and output, as well a coaxial (SPDIF) digital input and output. Both digital inputs allow connection of a CD, DVD, or Blu-ray player. The digital outputs let you connect an external DAC, AV receiver, or soundbar. Both digital inputs and outputs support up to 24-bit/192kHz PCM audio (not compatible with Dolby Digital, DTS, or other multichannel surround formats).

Analog Line-Level Input: The HiFi Rose RS520 features one analog stereo RCA line-level input for connection of an external source device with an analog output. The integrated amp does not have a dedicated Phono input. If you want to connect a turntable, you'll need an external phono preamp (sold separately - see Accessories Tab) or a turntable with a built-in preamp.

Binding Post Speaker Outputs: The HiFi Rose RS520 integrated amplifier is outfitted with a set of high-quality binding post terminals to connect a pair of loudspeakers. You can connect up to two pair of 8-ohm loudspeakers or one pair of 4-ohm loudspeakers. The binding post terminals will accept bare wire (up to 10AWG), pin-connectors, spade-lugs, and banana plugs (single only).

Stereo RCA Preamp Output: The HiFi Rose RS520 is equipped with a set of stereo RCA preamp outputs to connect an external power amplifier. The stereo RCA preamp outputs can be set to Fixed or Variable.

Network & Bluetooth Integration

Wired or Wireless Network Connection: The HiFi Rose RS520 integrated amplifier offers a wired (Ethernet) or wireless (WiFi) network connection to your router and ISP (internet service provider). The RS520 features a rear-panel Ethernet (RJ45) LAN jack for a hardwired connection to your network router. It also comes with a wireless/USB dongle that plugs into the rear-panel USB port (labeled "USB WiFi/BT Dongle") for a wireless connection to your network router. The wireless/USB dongle supports dual-band 2.4GHZ/5GHz and 802.11ac.

Online Entertainment Services: The HiFi Rose RS520 integrated amplifier gives you access to a variety of online video and music services - including RoseTube (YouTube client), Rose Podcasts, Tidal, Qobuz, Apple Music, and Internet Radio.

• RoseTube: RoseTube is a YouTube client developed by the Rose development team using the YouTube API provided by Google. Unlike YouTube, you can watch content without any advertisements before watching the content, and it provides a list of recommended contents suitable for HiFi enthusiasts. And regardless of the video quality, the highest quality audio tracks are always selected for playback, allowing you to enjoy YouTube in high quality.
• Rose Podcast: Rose Podcast (provided by iTunes) offers the most popular channels that are organized by topic. You can create your own subscriptions, playlists and favorite content.
• Rose Radio: You can listen to a variety of internet radio channels from USA to Germany with a Favorite (preset) feature, using Rose Radio.
• Tidal: Tidal is a global streaming service that offers millions of 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.
• Qobuz: Qobuz offers the biggest catalog of HiFi and Hi-Res albums in the world, both for new releases and specialized genres. For hundreds of thousands of albums, Qobuz includes all the information you need to recreate the appeal of a real CD - the names of musicians, producers, lyrics (everything you need to know to appreciate your favorite albums). Qobuz offers MP3, CD, and Hi-Res quality subscriptions.
• Apple Music: Apple Music is a subscription-paid streaming service with over 100 million songs ad-free. Easily find your favorite artists, discover new music, listen to curated playlists, and get exclusive artist content and interviews.

Spotify Connect: The integration of Spotify Connect will enable Spotify Premium users (subscription required) to instantly select and wirelessly stream music to the RS520 integrated amp 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 with millions of songs available.

Apple AirPlay: AirPlay lets you stream your favorite songs directly from your Apple iOS (4.3.3+) device and iTunes library (10.2.2+) on your Windows PC or Mac computer to the HiFi Rose RS520, over your home's wireless network connection. From your Apple iOS device you are able to stream stored music on your device, downloaded music apps, and music on your iCloud to the RS520 integrated amplifier. From your Windows or Mac you can stream your stored iTunes music library on your computer to the RS520; you can even download Apple's free Remote App onto your compatible iOS device to browse and control playback functions of the music stored in your iTunes music library on your computer that is being streamed to the integrated amplifier. With AirPlay you also get to see song/artist information and album art via the RS520's front-panel LCD touchscreen.

DLNA Compliant: Through a wired or wireless network connection, the HiFi Rose RS520 can be used as a DLNA Digital Media Renderer and play back a variety of audio and video files from a Windows PC, DLNA server, and NAS (Network Attached Storage) device.

• Audio Files: Compatible music files include MQA, PCM (up to 32-bit/768kHz), DSD (up to 22.4MHz), WAV, FLAC, WMA, MP3, AAC, AIFF, ALAC, APE, DFF, and DSF.
• Video Files: Video file playback is also supported; including ASF, AVI, MKV, MP4, WMV, MPEG-1, MPEG-2, MPEG-4 H.263, H.264, H.265, and more (up to 4K).

Roon Ready: Roon is a feature rich music library and playback application that compiles all the music files available to your network and makes them easily available to play across the HiFi Rose RS520 and other Roon enabled audio devices. Roon manages digital music files (including FLAC, WAV,, and DSD) collected on hard drives and networked storage. It can also access your Apple Music and iTunes library, as well as optionally integrate with the Tidal and Qobuz music streaming service. Roon is available for mobile, laptop or desktop devices. When you open the Roon app, it will display your complete audio library together with its metadata and artwork along with the RS520 integrated amplifier and all other Roon enabled devices. Simply select the music you wish to play and the RS520 or Roon device in which you want to hear it on.

Bluetooth 4.2: The HiFi Rose R520 features built-in Bluetooth 4.2 (through the use of the included wireless/USB dongle) with support for wireless music streaming (A2DP) and control (AVRCP). You'll be able to wirelessly stream stored music, music apps and other audio content on your Bluetooth-enabled smartphone, tablet, laptop, or desktop computer to the RS520 integrated amplifier. You'll also be able to control basic playback functions Play/Pause, Previous/Next Track, and Volume Up/Down from the included remote. In addition, song/artist/album information (no album art) will be displayed on the RS520''s front-panel LCD screen.

Intuitive User Interface

12.6" Capacitive Touchscreen: The HiFi Rose RS520 integrated amplifier features a full-color 12.6" TFT capacitive touchscreen LCD panel for an intuitive user interface with simple operation. In addition to simple touchscreen operation, the 12.6" LCD panel displays song/artist/album information (including album art) from select online music services and your network music collection. In addition, the LCD touchscreen will display time, date, and weather. There are also push-button controls on top of the integrated amp that operate Power, Volume, and Mute.

Remote Control: The HiFi Rose RS520 comes with a Bluetooth remote controller for wireless operation of the integrated amplifier. Because the remote is Bluetooth (and not IR), you don't need to point the remote directly at the RS520 integrated amp. The Bluetooth remote control has to be initially paired and connected to the RS520 integrated amplifier.

RoseConnect Premium App: The RoseConnect Premium App (for Apple iOS 15.0+, Android OS 8.0+, Windows 7-up, and Mac OS X) allows you to conveniently setup and operate the HiFi Rose RS520 integrated amplifier from your compatible Apple iOS device, Android OS device, Windows PC, or Mac computer.

IR In: The HiFi Rose RS520 does not have an internal IR receiver. However, it does feature an IR input (3.5mm) and comes with an IR receiver module for operation with universal IR remote controls.

12V Trigger In/Out: The RS520 is outfitted with a 12V trigger in (3.5mm) and 12V trigger out (3.5mm) to link power on/off functions between components that also feature 12V trigger inputs and outputs. .