ROSE RS451

The ROSE RS451 is a next-generation network streamer that elevates the Hi-Fi audio experience by combining refined sound performance, compact design, and advanced features. Based on the architecture of the flagship RS151 model, it integrates HiFi ROSE’s proprietary technologies, including the ROSE DPC™ digital processing core and the ROSE NRA™ analog filter, ensuring extreme precision, minimized jitter, and complete separation of digital and analog paths, resulting in reduced distortion and interference.

At the heart of the RS451’s audio performance are two high-performance ES9027PRO DACs, one dedicated to the preamplified output and the other to the headphone output, each with independent power supply and grounding to deliver clean signals, low noise, and wide dynamic range. The pre-out section integrates seamlessly into high-end audio systems, while the four-channel headphone amplifier provides powerful and stable driving, even for low-impedance headphones, maintaining linear response and tonal transparency. The four-channel parallel architecture for stereo output further enhances channel separation and spatial imaging, offering an immersive listening experience.

Despite its compact size, the RS451 blends aesthetics and ergonomics. The aluminum chassis reflects technical precision and durability, with the ROSE emblem engraved on top as a signature detail. The front panel features a precision-crafted volume knob and a layout optimized for easy access to high-performance headphones. The high-resolution 8.8-inch touch LCD display (1920 × 480) provides an intuitive interface, wide visibility, and full control, embodying ROSE’s “Visible Audio” philosophy.

Connectivity is comprehensive and designed for practical and professional use, including digital inputs via USB, coaxial, optical, AES/EBU, HDMI, and eARC, analog line-in, Trigger IN/OUT ports for centralized control of external devices, and Bluetooth 5.4 aptX with a proprietary antenna for stable, high-quality wireless audio. The RS451 also supports PCM→DSD upsampling up to DSD512 via the ROSE DPC™ module, preserving the finest details of original sources and enhancing sound depth and clarity. The IR remote replaces the previous Bluetooth control, offering greater stability, flexible positioning, and ease of use.

The RS451’s digital architecture inherits the expertise of HiFi ROSE’s flagship models, featuring a high-performance octa-core RK3588 CPU that supports high-resolution audio formats, streaming, and large music libraries. The ROSE DPC™ synchronizes signals with ultra-precise timing while isolating digital from analog paths, and the ROSE NRA™ filter ensures a flat, noise-free response even at very low frequencies, maintaining original sound fidelity. In this way, the RS451 combines compactness, sophistication, and technical power, delivering a precise, natural, and immersive high-resolution listening experience in any environment.

Technical Specifications:

• Type: Streamer; Headphone Amplifier
• Audio Inputs: 1x USB-B; 1x Coaxial; 1x Optical Toslink; 1x HDMI eARC; 1x Stereo RCA
• Audio Outputs: 1x USB-C 3.0; 1x Coaxial; 1x Optical Toslink; 1x Balanced XLR Stereo; 1x RCA Stereo Single-ended; 1x 4-pin XLR Headphone Out; 1x 4.4mm Headphone Jack; 1x 6.35mm Headphone Jack
• Video Output: 1x HDMI 2.0 (4K UHD/60Hz)
• Network Connectivity: Ethernet 10/100/1000 BASE-T; WiFi via included USB Dongle
• Bluetooth Connectivity: 5.4 aptX (A2DP1.4, Sink, AVRCP v1.6.2)
• Supported Network Protocols: AirPlay; DLNA/UPnP; Roon Ready; Spotify Connect; SMB; FTP; WebDav
• Supported Audio Formats: WAV; FLAC; ALAC; AIFF; WMA; OGG; APE; DFF; DSF; CDA; M4A; MP3; AAC; AMR; EC3; E-EC3; MID; MPL; MP2; MPC; MPGA
• Supported Video Formats: ASF; AVI; MKV; MP4; WMV; MPEG-1/2/4; H.263; H.264/AVC; H.265/HEVC; VC-1; VP8/9; MVC; H.264/AVC (Base/Main/High/High10, Level 5.1) up to 4Kx2K@30fps; H.265/HEVC (Main/Main10,
• Level 5.1 High-tier) up to 4Kx2K@60fps; VP9/H.264/H.265 up to 4Kx2K@60fps; H.264/MVC/VP8 Encoding up to 1080p@30fps
• CPU: Octa-Core RK3588 (Quad-core Cortex-A76 + Quad-core Cortex-A55)
• GPU: ARM Mali-G610 MC4 (OpenGL, Vulkan, OpenCL)
• DAC: ES9027PRO
• RAM: LPDDR4X 8GB
• Output Level: XLR 4-pin 10Vrms; RCA 5Vrms; 4.4mm Jack 16Ω 2700mW / 32Ω 2600mW / 300Ω 650mW / 600Ω 350mW; 6.35mm Jack 16Ω 2700mW / 32Ω 2600mW / 300Ω 650mW / 600Ω 350mW
• THD+N: 16Ω 0.00087%; 32Ω 0.00076%; 300Ω 0.00037%; 600Ω 0.00038%
• SNR: XLR 129dB; RCA 126dB; XLR 4-pin 128dB; 4.4mm Jack 128dB; 6.35mm Jack 118dB
• Crosstalk: 140dB (20Hz-20kHz)
• Frequency Response: 10Hz-80kHz
• Supported Rates: PCM 32bit/768kHz; DSD512
• Output Impedance: XLR 1.5Ω; RCA 1.3Ω
• External Storage: 2.5" SSD Slot (SATA3.0, NTFS, exFAT; SSD sold separately)
• CD Ripping: Via USB with ROSE RSA780
• Trigger: 12 V DC
• Power Supply: 110-120V, 220-240V AC 50/60Hz
• Dimensions: 430 x 337 x 92 mm
• Weight: 7 Kg
• Package Contents: 1x ROSE HiFi RS451; 1x Remote Control; 1x Power Cable 1.8m; 1x WiFi USB Dongle