HiFi Rose RS 451 Music Streamer & DAC

The HiFi Rose RS451 is a next-generation network streamer, combining HiFi Rose’s advanced digital audio technologies with a new variety of output options and a new footprint that’s ideal for both traditional hi-fi systems and desktop headphone listening.

The ES9027PRO used in the RS451 is a high-end 32-bit, 8-channel DAC chip designed with ESS’s HyperStream® architecture, delivering precise performance optimised for hi-fi audio applications. Its class leading specifications enabling delicate and clean sound reproduction. Supporting PCM up to 768kHz and DSD512, it ensures perfect compatibility with high-resolution audio formats. The variety of digital filters also offer a degree of sound customisation, to suit different styles of music or listening preferences.

By utilising two DAC chips within its advanced circuitry, the RS451 can deploy one chip for the traditional pre-out stage, and a separate one for the headphone output stage. In this way, the two signal paths are completely separated. The high-performance headphone stage further consists of four individually driven amplifiers that provide strong and stable output, even for low-impedance headphones. Further clarity and performance are guaranteed by the isolated power supply design for each channel. The result is a truly first-class headphone system, all in one box. 

The RS451 makes use of Rose’s Digital Processing Core (DPC) Module, which was originally developed for the RD160 DAC and further employed in the RS151. This module precisely synchronizes any digital signal the DAC receives with a high-precision Femto clock as an I2S signal. It applies clock synchronization and locking processes to minimise jitter, allowing for accurate processing and a natural, clear sound performance. By isolating this module away from the wider CPU circuitry, it’s possible to eliminate signal distortion and interference that’s generated within the unit from the digital audio path. The result is accurately processed data, resulting in a natural and clean sound across a wide range of digital formats.

• Vibrant 8.8" IPS LCD with Capacitive Touchscreen (MIPI) for responsive, wide-angle viewing.

• ROSE DPC™ Digital Processing Core and ROSE NRA™ Noise Reduction Analog architecture deliver flat, transparent sound with vanishingly low distortion (0.00025% THD+N).

• Built-in high-power headphone amplifier with balanced XLR and 4.4mm outputs for true reference-grade listening.

• Independent power supply per channel and toroidal linear PSU ensure ultra-low noise and superior stereo separation.

• High-precision Femto clock for exceptional timing accuracy and jitter control.

• Native DSD512 / PCM 32-bit 768kHz decoding with ESS ES9027PRO DAC.

• Supports AirPlay, DLNA, Roon Ready, Spotify Connect, TIDAL, Qobuz, Apple Music, RoseTube, and Internet Radio.

• SSD caching playback for smoother streaming and faster response.

• External master clock input and Fiber Optic Ethernet & USB connectivity for enhanced digital isolation.

• Precision-milled aluminum chassis designed to minimize vibration and thermal noise.

• Seamless app control via the intuitive ROSE Connect app (Android, iOS, PC).

Specifications

• Operating System -HiFi ROSE OS (based on customized Android)

• Display -8.8" IPS LCD & Capacitive Touch Screen (MIPI)

• CPU -Quad-core Cortex-A76 + Quad-core Cortex-A55

• GPU -ARM Mali-G610 MC4 (OpenGL, Vulkan, OpenCL)

• Memory -LPDDR4X 8GB

• Cache Storage -1 × 2.5" SSD (SATA 3.0, NTFS/exFAT)

• Network -Ethernet 10/100/1000 BASE-T

• WiFi -USB Dongle (2.4/5 GHz Dual-Band Supported)

• Bluetooth -v5.4 aptX (A2DP 1.4, Sink, AVRCP v1.6.2)

• File System -NTFS / exFAT

• Network Protocol -SMB / FTP / WebDav

• Storage Interface -3 × USB 3.0 Type-A Ports + 1 × 2.5" SSD Bay (SATA 3.0)

• Dimensions -430(W) x 317(D) x 125(H) mm

• Weight -12kg

In The Box

• HiFi Rose RS 451 Music Streamer & DAC

• Limited 1-Year Manufacturer Warrant