The new Hifi Rose RS151 builds on the popularity of the award winning RS150b and further improves the performance with some unique internal design learnt from the development of the RD160 DAC. It also has the beautiful full colour screen from the RS130 Transport, making it a joy to use!
The RS151 is a network streamer that achieves groundbreaking improvements in every aspect.
ROSE's proprietary cutting-edge technologies developed during the RD160 project, combined with the latest flagship DAC chip and sophisticated design, deliver revolutionary advancements in audio performance.
The significantly enhanced processing power, based on a next generation 8-core CPU, integrates seamlessly with the Full HD wide view multi-touch display introduced in the RS130, delivering a smoother and more enjoyable playback experience.
With upgrades in performance, functionality, and convenience, the RS151 sets a new standard for high-resolution audio and streaming.
The ROSE DPC module is applied to the RS151'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.
Featuring 4th-generation Hyperstream® technology, the ES9039PRO combines with a highly precise Femto clock to drastically suppress jitter. In addition, it further enhances linearity during the digital-to-analog conversion process. This allows to deliver distortion-free, clean sound with improved timing accuracy and precise reproduction of detailed acoustic nuances in high-resolution audio.
The digital and analog signal paths are physically and completely separated, ensuring that each circuit operates independently. This design prevents any influence from noise and jitter generated in the digital circuit, offering a higher level of clarity and accuracy without interference or distortion between the paths.
The ES9039PRO features an independent processing design, ensuring that all 8 channels operate independently within their own dedicated circuits. This enables the delivery of exceptional channel separation, precise stereo imaging, an
expanded soundstage, and outstanding spatiality without any channel interference.
The RS151 incorporates a variety of technological innovations and premium components to enhance sound quality. In the DAC stage, I/V conversion circuit, and OP-AMP stage, high-precision MELF resistors and audio-grade WIMA film capacitors are employed to improve linearity during signal processing and minimize distortion. Additionally, the bias voltage of the OP-AMP is precisely controlled, resulting in a more refined and natural sound. A single-point ground design minimizes grounding loops and suppresses noise interference, enhancing signal purity. Around the power supply, decoupling capacitors with low ESR (Equivalent Series Resistance) and high ripple current capacity are placed to effectively filter high-frequency noise and strengthen power supply stability. Thanks to these sophisticated design, the RS151 achieves remarkable measurement values with a SNR of 131.4dB and THD+N of just 0.0002%. These figures represent groundbreaking progress in signal accuracy and sound quality.
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 RS151 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.
Equipped with the next-generation 8-core CPU, the RK3588, RS151 boasts four times the data processing performance and eight times the graphics performance compared to its predecessor. The DRAM capacity has been doubled from 4GB to 8GB, while the eMMC storage has been expanded from 8GB to 32GB, providing processing speeds more than twice as fast. This enables seamless playback of large audio files and 4K high-resolution videos with HDR, while the media library capacity has tripled, supporting over a million tracks. Additionally, improved I/O bus performance offers read/write speeds approximately twice as fast as before, allowing for quicker file transfers and faster response times during music playback for a smoother listening experience. The newly integrated Android 12 OS further enhances user convenience and security, providing an intuitive and stable user experience.
The RS151 features HiFi ROSE’s signature full-size wide-viewing-angle display, enhancing the appeal of “Impression of sound enjoyed by eyes and ears” to the fullest. Upgraded from 14.9 inches to 15.4 inches and from HD to Full HD, the display offers a generous screen size and superior resolution, reproducing album art and videos in stunning high quality. The intuitive multi-touch screen panel provides exceptional user convenience, while its high resolution and wide color gamut allow for detailed and vivid visual representation.
The previously supported ARC via HDMI has been upgraded to eARC, allowing uncompressed transmission of high-resolution audio signals at 24bit/192kHz. This enhancement enables the RS151 to deliver even more realistic and high quality Hi-Fi sound through HDMI, bringing you closer to a true Hi-Fi experience.
The RS151 integrates a SIG-certified Bluetooth module and a proprietary antenna, supporting the latest Bluetooth® v5.4 specification. Built on the Qualcomm QCC3083 chipset, this module features a high-performance 24-bit audio interface and aptX codec, delivering high bitrates and exceptional sound quality. It also supports various profiles, including A2DP, AVRCP, and IOPT, ensuring a stable and premium wireless audio experience.
With the ES9039PRO’s significantly enhanced digital signal processing capabilities, the RS151 now officially supports PCM 24bit/384kHz and DSD128 formats via coaxial and AES/EBU inputs.
The RS151 offers the ability to convert PCM audio to DSD and upscale it to a maximum of DSD512 using the ROSE DPC module. This allows users to enjoy various PCM audio sources with the rich, unique sound characteristics of DSD.
The high-resolution upsampling preserves the fine details of the original source while enriching the sound with depth and clarity tailored to user preferences.
Replacing the previous Bluetooth-based control, the RS151 now features an IR remote receiver. With less restrictions on range and angle and no need for pairing, the IR remote offers stable, intuitive control and enhanced user convenience.
