ROSE HIFI RW800 ROSE AIR LITE Streamer Digital Transport

The Rose HiFi RW800 Rose Air Lite is a compact streamer (digital transport) integrating an ES9280 DAC, designed to provide both dematerialized playback and digital transport within a HiFi system. It supports streams up to 32bit 384kHz as well as DSD128, relying on an architecture separating network and audio processing in order to limit interference and stabilize conversion, which allows full use of source resolution depending on the selected output mode.

Designed for versatile integration, it combines extended network connectivity (Ethernet, WiFi, AirPlay 2, DLNA, Roon, streaming services) and dual analog and digital outputs, allowing operation either as a direct source to an amplifier or as a transport to an external DAC. This approach is extended by a dual-mode operation, allowing standalone use or extension of a Rose HiFi device, while maintaining compatibility with non-proprietary systems and simplified implementation.

Rose HiFi RW800 Rose Air Lite: Audio architecture and signal processing

The RW800 relies on an architecture separating network and audio processing, allowing to limit interference between data streams and conversion, resulting in increased signal stability. To achieve this, it integrates an ES9280 DAC combined with an SRC4382 processor, ensuring digital-to-analog conversion and processing of streams up to 24bit 192kHz on optical interfaces, while USB transport allows streams up to 32bit 384kHz, thus enabling adaptation of the playback chain to the resolution level of the sources.

Analog output is provided via a stereo RCA output delivering up to 2Vrms, with a THD+N of 0.0008% and a signal-to-noise ratio of 119dB, ensuring low distortion and controlled noise floor. This architecture combines analog output and optical digital output, allowing either use of the internal DAC or an external converter, enabling use as a direct analog source or as a digital transport depending on system organization.

Rose HiFi RW800 Rose Air Lite: Design and implementation

The rigid polymer chassis allows housing the circuits in a compact format while ensuring good mechanical strength, while the silicone feet limit vibration transmission to the device, contributing to stable installation.

The power supply adapts to the operating mode, being provided directly via USB-C in CH mode or via an external 5V / 1.5A power supply in standalone use, allowing simplified cabling or complete independence depending on the configuration. An LED indicator completes the whole by providing visual feedback on operating status.