Lewis CaliburnNew from HiFi Rose is the next-generation replacement for its top-of-the-line streamer source. The RS151 boasts improved CPU power, improved display, updated Android 12 base operating system, an upgraded ESS DAC and enhanced connectivity.
Since the introduction of HiFi Rose to the UK audio market in 2021, the RS150 network streamer has been a focal point for the brand’s offering. Its extensive feature set, industrial design and high-quality sound typified the HiFi Rose philosophy.
Today, the replacement for the RS150 is finally unveiled and represents a new generation of technology, design and sound quality for the Korean company.
The RS151 is a network streamer that achieves improvements in every aspect. Taking inspiration from other HiFi Rose products, like the flagship RS130 network transport and the RD160 DAC, it can achieve an even more impressive specification than ever before, says the manufacturer.
The RS151 is a reference-level network streamer, using next-generation technologies. Boasting a full-HD touch screen within a sturdy aluminium chassis, it serves as a streamer for music and as a high-quality DAC for any other digital sources. The advanced ROSE OS operating system makes the RS151 an easy partner for any high-quality audio system.
Innovative Signal Processing
The RS151 makes use of Rose’s Digital Processing Core (DPC) Module, which was originally developed for the RD160 DAC. This module precisely synchronises any digital signal the DAC receives with a high-precision Femto clock as an I2S signal. It applies clock synchronisation 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.
The DAC design employed within the RS151 makes use of the ES9039PRO DAC chip with fourth generation Hyperstream technology. Within this section, the digital and analogue signal paths are completely separated, ensuring that each circuit operates independently and with reduced interference.
Engineered for Sound
The RS151 makes use of advanced design principles and premium components to enhance sound quality. In the DAC stage, I/V conversion circuit and the Op-Amp stage, high-precision MELF resistors and WIMA film capacitors are used for improved linearity and minimised distortion.
A single-point ground design reduces grounding loops and suppresses noise and interference and the advanced power supply design strengthens power stability and filters out high-frequency noise.
The analogue stage of the RS151 also makes use of Rose’s new Noise Reduction Analog (NRA) filter, which the company designed to further eliminate noise and deliver an extremely flat response across the frequency spectrum – even in the lower ranges.
ROSE OS
At the centre of the RS151 is ROSE OS, HiFi Rose’s Android-based operating system, which opens up a world of music and video content to a user’s streamer. ROSE OS supports local network music playback within Rose’s Music app, as well as CD playback and ripping via a connected optical drive.
There is also support for internet radio, Spotify Connect, Tidal, Qobuz and Apple Music. The RS151 is also Roon Ready and Plays with Audirvāna certified. In addition, the operating system offers support for video playback, either locally or within the Tidal or Rose Tube apps.
As well as ROSE OS, the RS151 makes use of the ROSE Audio Engine, an in-house development that ensures all digital audio is delivered to the DAC without loss for precise signal processing.
The upgraded 8-Core CPU used in the RS151 boasts four times the data processing performance and eight times the graphics performance of anything that has come before it in the Rose range, says the brand. The result of this upgrade is the best ROSE OS experience yet, including support for larger music libraries.
Connect what you need
The RS151 is designed to be an ideal entertainment hub. With a wide range of connections, including HDMI eARC, Hi-Res Coax, AES/EBU and USB inputs and outputs, optical inputs and outputs, I2S output and an analogue line input, it’s easy to integrate into almost any audio system, claims the manufacturer.
There’s also a new external Bluetooth module and antenna, supporting Bluetooth v5.4 via an advanced Qualcomm chipset, for wireless audio playback from a connected device.
Sound Design
The RS151’s chassis is crafted from aluminium plates up-to 30mm thick, CNC-machined for effective heat dissipation, ensuring stable performance even during extended use. Its minimal assembly joints enhance structural rigidity, effectively suppressing vibrations.
Similarly, the new Full HD 15.4” display has a wide viewing angle and superior resolution, adding to the overall aesthetic. T
The RS151 is available immediately throughout the UK HiFi Rose dealer network for £4,299.00 (SRP).