The HiFi Rose RDC DAC is equipped with a ROSE DPC(Digital Processing Core)™ Module, where all processing blocks are designed to maintain optimal signal accuracy and precision, ensuring the delivery of high-fidelity sound. This module precisely synchronises digital signals input from various methods to a high-precision OCXO clock, aligning them as I2S signals. Especially when processing high-resolution audio signals, the module applies clock synchronisation and locking processes to minimise jitter, resulting in accurate signal processing and natural, clean sound. 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 RD160 guarantees superior digital signal quality and ensures high-quality sound with compatibility across various digital formats.

The ROSE CIM™ architecture is designed to maximise sound quality through complete isolation and modularisation. The HiFi Rose RD160’s DAC module employs a 2-chip solution, where the AK4191 chip handles digital filtering and initial delta-sigma conversion stages, while the AK4499EX chip performs digital-to-analogue conversion. By structurally separating the digital and analogue circuits, the RD160 achieves perfect noise isolation during the mutual processing stages, an extremely high signal-to-noise ratio, and the highest level of analogue characteristics.

Furthermore, by assigning individual DAC modules to each channel and employing a fully balanced symmetrical design for the analogue output stage, the HiFi Racks RD160 DAC effectively eliminates noise that could be coupled between channels. This design allows the RD160 to boast an exceptional dynamic range and to accurately reproduce even the most intricate details of the original sound with clear and precise stereo imaging.

The analogue stage of the RD160 DAC is equipped with the ROSE NRA™ filter, and achieves flat frequency characteristics even in the very low frequency range. As a result, the RD160 boasts a consistent frequency response across the entire spectrum without roll-offs, delivering clear and faithful reproduction of the original sound information in high-resolution audio, from deep and powerful sub-bass to the ambient details in the high-frequency range.

The reference linear power supplies in the RD160, developed in-house by ROSE, are engineered to achieve the highest sound quality using ULTRA LOW NOISE power chipsets. These power supplies independently feed the digital input stage and the left and right analogue output stages, minimising crosstalk and interference between sections. This design effectively suppresses noise across the digital processing, clock, and analogue output circuits, ensuring signal integrity. By delivering stable power tailored to the specific needs of each stage, it enhances the DAC’s dynamic range and resolution, faithfully conveying even the most subtle details of the music. Additionally, the reduction of jitter maximises the spatial characteristics of the soundstage, resulting in a wider and more precise soundstage with sharp imaging. Through this power supply design, the RD160 elevates audio clarity and dynamics, offering a deeply immersive listening experience.

Features

• Hidden AMOLED screen displays circuit diagrams and sound waves with responsive controls
• ROSE CIM™architecture with AK4191 and AK4499EX chips for noise isolation and high SNR
• Balanced DAC modules and JFET output stage for dynamic range and clear stereo imaging
• Independent linear power supplies minimize noise and crosstalk
• External master clock input ensures perfect synchronisation and reduces jitter
• High precision OCXO clock enhances audio accuracy by reducing jitter

Specifications

Input Sensitivity: 0dBF 1kHz
Output Impedance: 300Ω
Output Level: 4.5Vrms(RCA), 9Vrms(XLR)
THD + N: 0.005%(RCA), 0.005%(XLR) (1kHz 0dBF)
Signal to Noise Ratio: 124dB(RCA), 124dB(XLR)
Residual Noise: 0.3mV(RCA), 0.4mV(XLR)
Stereo Crosstalk: -124dB(RCA), -124dB(XLR) (1kHz 0dBF)
Frequency Response: 10Hz ~ 20kHz (-0.3dB), 10Hz ~ 50kHz (-1.5dB), 10Hz ~ 73kHz (-3.0dB)
DAC: 2 x AK4499EXEQ + 2 x AK4191EQ
PSU: 3 x Independently Customized Reference Linear Toroidal
CPU: RK3128 Quad core Cortex-A7mp
RAM: DDR3 1866MHz 1GB
Flash: 8GB eMMc
Oscillator: High Precision OCXO clock
Inputs Digital: USB SFP Module (PCM 32bit/768kHz, DSD512(22.6MHz)), USB 2.0 Type-B (PCM 32bit/768kHz, DSD512(22.6MHz)), HDMI I2S (PCM 32bit/768kHz, DSD512(22.6MHz)), Coaxial RCA (PCM 32bit/384kHz, DSD128(5.6MHz) (only DoP)), Coaxial BNC (PCM 32bit/384kHz, DSD128(5.6MHz) (only DoP)), Optical (PCM 32bit/192kHz, DSD64(2.8MHz) (only DoP)), AES/EBU (PCM 32bit/384kHz, DSD128(5.6MHz) (only DoP))
External Clock: BNC 75Ω(10MHz), SMA 50Ω(10MHz)
Outputs Analogue: Unbalanced, Balanced
PCM Filter: Sharp, Slow, Short Sharp (default), Short Slow, Super Slow, Low Short
Pre-Out Level: 1V~9V
Power Input Voltage: 220V-240V~, 50/60Hz
Standby: 0.3W
Playback: 30W
Physical Display: AMOLED hidden screen
Dimension: 430(W) 330(D) 88(H) mm
Weight: 10kg
Material: Solid Aluminium / Rust-proof Steel
Finish: Silver or Black
Infra Red: 38kHz IR Receiver