Description
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The RS451 is a next-generation network player designed by HiFi Rose. It uses many of the same technical solutions as the RS151, but is adapted for desktop use. It includes an advanced headphone section and offers extensive processing capabilities in a compact form factor.
Dual DAC design
The RS451 uses an exceptional technical architecture with two completely independent ES9027PRO converters. This circuit from ESS Technology, based on the fourth generation HyperStream technology, delivers +124 dB of dynamic range and -114 dB of harmonic distortion. Each converter has its own power circuits and separate grounding, eliminating any mutual interference.
The first DAC is dedicated exclusively to the preamp outputs, ensuring seamless integration into traditional high-end systems. The balanced XLR outputs have an output impedance of 1.5 Ω and are capable of up to 10 Vrms, while the unbalanced RCA outputs offer 5 Vrms at 1.3 Ω. The signal-to-noise ratio reaches 129 dB in a balanced configuration, and the frequency response is linear from 10 Hz to 80 kHz.
The second converter is dedicated to the headphone section, where it works in conjunction with four parallel amplifier circuits. This topology enables stable power even with high-impedance headphones above 600 Ω. The exceptional 1300 V/µs slew rate ensures accurate reproduction of transients and the most subtle dynamic changes. Measurements show impressive power: 2700 mW into 16 Ω balanced, 650 mW into 300 Ω and a further 350 mW into 600 Ω, with harmonic distortion remaining below 0.0009%.
ROSE NRA filter: controlled analog signature
The analog output stage features a ROSE NRA (Noise Reduction Analog) proprietary filter, developed to ensure a completely linear frequency response right down to the deepest bass. The technology eliminates the roll-off phenomenon typically observed at extreme frequencies, thus preserving the original signal of high-resolution sources intact. Precision components such as MELF resistors and WIMA film capacitors support this sonic transparency by minimizing distortion and improving signal linearity.
Multiplied computing power
At the heart of the RS451 is the next-generation RK3588 processor, an octa-core chip with four Cortex-A76 and four Cortex-A55 cores. The configuration offers four times the processing power of previous models, while the Mali-G610 MC4 GPU provides eight times the display capability. 8GB of LPDDR4X memory and 32GB of eMMC storage enable smooth management of extremely large music libraries, with a theoretical capacity exceeding one million songs.
This power is embodied in a responsive user interface and seamless playback of even the heaviest audio files, whether PCM up to 32-bit/768 kHz or native DSD512 playback. The 8.8-inch IPS touchscreen offers intuitive navigation through menus and streaming services, and enables 4K HDR video playback via HDMI 2.0.
Comprehensive connections for all needs
The RS451's rear panel reveals a wealth of connectivity, highlighting its versatile nature. Digital inputs include USB-B 2.0 (compatible with 768 kHz/32 bit and DSD512), coaxial and optical (up to 384 kHz and DSD128 in DoP mode), and an HDMI eARC input for home theater integration. For traditional sources, an analog line input completes the package.
Digital outputs include three USB-A 3.0 ports for external storage, as well as coaxial and optical outputs. The device also supports the installation of a 2.5-inch SSD internally via a SATA 3.0 connection, allowing you to build a significant local music library. Network connectivity is based on a gigabit Ethernet port, Wi-Fi via a USB dongle, and Bluetooth 5.4 with aptX support.
Software compatibility covers all modern protocols: Roon Ready for users of this premium platform, AirPlay for the Apple ecosystem, Spotify Connect for access to DLNA/UPnP NAS servers, and native integration for Tidal, Qobuz, and Apple Music. The Rose Connect app, available for iOS and Android, centralizes control in a sleek interface that evokes Roon’s ergonomics.
Specifications
The RS451 is a next-generation network player designed by HiFi Rose. It uses many of the same technical solutions as the RS151, but is adapted for desktop use. It includes an advanced headphone section and offers extensive processing capabilities in a compact form factor.
Dual DAC design
The RS451 uses an exceptional technical architecture with two completely independent ES9027PRO converters. This circuit from ESS Technology, based on the fourth generation HyperStream technology, delivers +124 dB of dynamic range and -114 dB of harmonic distortion. Each converter has its own power circuits and separate grounding, eliminating any mutual interference.
The first DAC is dedicated exclusively to the preamp outputs, ensuring seamless integration into traditional high-end systems. The balanced XLR outputs have an output impedance of 1.5 Ω and are capable of up to 10 Vrms, while the unbalanced RCA outputs offer 5 Vrms at 1.3 Ω. The signal-to-noise ratio reaches 129 dB in a balanced configuration, and the frequency response is linear from 10 Hz to 80 kHz.
The second converter is dedicated to the headphone section, where it works in conjunction with four parallel amplifier circuits. This topology enables stable power even with high-impedance headphones above 600 Ω. The exceptional 1300 V/µs slew rate ensures accurate reproduction of transients and the most subtle dynamic changes. Measurements show impressive power: 2700 mW into 16 Ω balanced, 650 mW into 300 Ω and a further 350 mW into 600 Ω, with harmonic distortion remaining below 0.0009%.
ROSE NRA filter: controlled analog signature
The analog output stage features a ROSE NRA (Noise Reduction Analog) proprietary filter, developed to ensure a completely linear frequency response right down to the deepest bass. The technology eliminates the roll-off phenomenon typically observed at extreme frequencies, thus preserving the original signal of high-resolution sources intact. Precision components such as MELF resistors and WIMA film capacitors support this sonic transparency by minimizing distortion and improving signal linearity.
Multiplied computing power
At the heart of the RS451 is the next-generation RK3588 processor, an octa-core chip with four Cortex-A76 and four Cortex-A55 cores. The configuration offers four times the processing power of previous models, while the Mali-G610 MC4 GPU provides eight times the display capability. 8GB of LPDDR4X memory and 32GB of eMMC storage enable smooth management of extremely large music libraries, with a theoretical capacity exceeding one million songs.
This power is embodied in a responsive user interface and seamless playback of even the heaviest audio files, whether PCM up to 32-bit/768 kHz or native DSD512 playback. The 8.8-inch IPS touchscreen offers intuitive navigation through menus and streaming services, and enables 4K HDR video playback via HDMI 2.0.
Comprehensive connections for all needs
The RS451's rear panel reveals a wealth of connectivity, highlighting its versatile nature. Digital inputs include USB-B 2.0 (compatible with 768 kHz/32 bit and DSD512), coaxial and optical (up to 384 kHz and DSD128 in DoP mode), and an HDMI eARC input for home theater integration. For traditional sources, an analog line input completes the package.
Digital outputs include three USB-A 3.0 ports for external storage, as well as coaxial and optical outputs. The device also supports the installation of a 2.5-inch SSD internally via a SATA 3.0 connection, allowing you to build a significant local music library. Network connectivity is based on a gigabit Ethernet port, Wi-Fi via a USB dongle, and Bluetooth 5.4 with aptX support.
Software compatibility covers all modern protocols: Roon Ready for users of this premium platform, AirPlay for the Apple ecosystem, Spotify Connect for access to DLNA/UPnP NAS servers, and native integration for Tidal, Qobuz, and Apple Music. The Rose Connect app, available for iOS and Android, centralizes control in a sleek interface that evokes Roon’s ergonomics.
Specifications