HiFi ROSE RS451 Network Streamer & Headphone Amplifier

The RS451 is HiFi ROSE's next-generation network streamer, integrating the brand's advanced digital audio technologies. It inherits the high-performance architecture of the flagship RS151, while offering practical usability and space efficiency optimized for desktop audio setups.

Equipped with a high-performance ES9027PRO DAC, the RS451 applies separate DAC circuits for both pre-out and headphone output, delivering refined, high-end sound tailored to each listening environment. The pre-out section is designed with precision DAC circuitry to integrate seamlessly into high-end audio systems, while the dedicated headphone DAC is paired with four high-performance amplifiers to achieve precise impedance matching, low noise, and powerful driving performance.

The RS451 is a network streamer that strikes a finely tuned balance of performance, design, and usability. It sets a new standard for audio experiences from HiFi ROSE.

Compact Form, Full Potential
The RS451 is engineered to deliver high-fidelity audio performance in a slim and space-efficient form factor. Its design fits naturally on desktops, bookshelves, or among living room audio systems, minimizing installation constraints and adapting seamlessly to various environments. The exterior design reflects the brand's identity and technical precision. ROSE's signature aluminum enclosure not only ensures durability but also expresses the product's presence with refined proportions that balance aesthetics and function. The top-engraved ROSE emblem serves as a visual focal point, symbolizing the brand's identity and design philosophy.

Functional Elegance on the Front Panel
The RS451 features a refined front design that embodies the elegance of high-end audio and blends naturally into a variety of spaces. On the left side, three headphone outputs are intuitively arranged: 4.4mm balanced, 6.35mm, and XLR unbalanced. This offers excellent connectivity and ease of use. The layout is optimized for both practicality and support for high-output headphones, maximizing the RS451's capabilities as a personal Hi-Fi system. On the right, the precisely machined volume knob provides a sense of visual balance and tactile satisfaction, combining with minimalist aesthetics.

8" High-Resolution Touchscreen
The RS451 is equipped with an LCD touchscreen that delivers an intuitive and seamless user experience. Its 8.8-inch display with a high resolution of 1920 x 480 offers a wider screen and superior visibility compared to in its class, ensuring exceptional ease of operation. Reflecting ROSE's "Visible Audio" philosophy, the wide-view LCD provides vivid clarity and allows for intuitive control of the device, delivering a user-friendly interface and a more immersive listening experience.

ROSE DPC (Digital Processing Core)™ Module
The ROSE DPC™ module is applied to the RS451's digital stage, minimizing jitter and maximizing signal quality by precisely synchronizing input signals with a highly precise Femto clock and aligning them as I2S signals. All processing blocks within this module are designed to maintain the highest level of signal accuracy. Additionally, the circuit for the user interface and GUI configuration is completely isolated from the digital audio signal path, thoroughly eliminating signal distortion and interference. Through this design, the RS151 guarantees accurate signal processing, natural and clean sound, and seamless compatibility with various digital formats.

ROSE NRA (Noise Reduction Analog)™ Filter
The analog stage features the ROSE NRA™ filter, designed to eliminate noise and enable flat frequency characteristics even at extremely low frequency ranges. With this innovation, the RS451 boasts a fixed frequency response across the entire range without roll-off, faithfully and clearly reproducing the original sound information embedded in high-resolution audio sources.

Advanced DAC Architecture
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 optimized for Hi-Fi audio applications. It offers an impressive dynamic range of up to 124dB and a THD N of 114dB, enabling delicate and clean sound reproduction. Supporting PCM up to 768kHz and DSD512, it ensures perfect compatibility with high-resolution audio formats. With seven built-in digital filters, users can fine-tune the sound signature to match their preferences. In the RS451, the DAC's eight channels are configured in a 4-channel parallel structure for stereo output, achieving even greater dynamic range and ultra-low noise performance.

USB DAC Performance & Stability
The RS451 is equipped with a USB Audio Class 2.0 interface designed to reliably receive high-resolution audio signals from external sources without