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HiFi Rose RS451 Network Streamer
HiFi Rose RS451 Network Streamer
$4,795.00
Product Details
HiFi Rose RS451 Network Streamer at Vinyl Sound Toronto, Canada
The RS451 is a master fidelity network streamer from HiFi Rose (Seoul, South Korea), available at Vinyl Sound in Toronto, Canada. Inheriting the high-performance architecture of the flagship RS151, the RS451 integrates dual ESS SABRE ES9027PRO DAC chips with fully independent circuits for pre-out and headphone output, the proprietary ROSE DPC (Digital Processing Core) module with Femto clock for minimum jitter, and the ROSE NRA (Noise Reduction Analog) filter for flat, roll-off-free frequency response. Housed in a slim, desktop-optimized aluminium enclosure with an 8.8-inch Full HD IPS touchscreen and three front-panel headphone outputs covering 4.4 mm balanced, 6.35 mm single-ended, and full-size XLR balanced, the RS451 delivers reference-class HiFi Rose performance in a form factor engineered for the modern listening space. It is available in Canada through authorized HiFi Rose dealers including Vinyl Sound.
Frequently Asked Questions
Q: What is the HiFi Rose RS451?
A: The HiFi Rose RS451 is a master fidelity network streamer from HiFi Rose of Seoul, South Korea, featuring dual ESS SABRE ES9027PRO DAC chips with independent circuits for pre-out and headphone output, the ROSE DPC module with Femto clock for jitter minimization, three front-panel headphone outputs including 4.4 mm balanced pentaconn and full-size XLR balanced, and an 8.8-inch Full HD IPS touchscreen. It is available in Canada through authorized HiFi Rose dealers including Vinyl Sound in Toronto.
Q: How does the HiFi Rose RS451 compare to the Astell and Kern AK Stream and Cocktail Audio X45PRO?
A: The HiFi Rose RS451 occupies a distinct position among desktop network streamers. The Astell and Kern AK Stream is a compact streamer transport without onboard DAC or headphone output, requiring an external DAC for analog output. The Cocktail Audio X45PRO includes a built-in DAC and headphone output but uses a single shared DAC circuit for all outputs and does not deploy a dedicated jitter-reduction module equivalent to the ROSE DPC. The RS451 differentiates itself with dual independent ES9027PRO DAC chips, a Femto clock DPC module inherited from the flagship RS151, three discrete headphone outputs covering balanced and single-ended standards, and the ROSE NRA analog filter for flat full-range frequency response, all within a desktop form factor.
Q: What is the ROSE DPC module and why is it significant in the RS451?
A: The ROSE DPC (Digital Processing Core) module is a proprietary HiFi Rose circuit that synchronizes all incoming digital audio signals to a Femto clock reference before converting them to I2S for the DAC stage. Its significance in the RS451 is that it brings Femto clock jitter reduction, a technology normally found only in flagship-class components, into a slim desktop streamer. The DPC module also physically isolates the GUI and touchscreen circuits from the audio path, ensuring the operating system and display activity generate no interference in the signal chain, a level of circuit discipline that is exceptional in a product of the RS451's size and form factor.
Q: Can the HiFi Rose RS451 drive demanding headphones directly?
A: Yes, the HiFi Rose RS451's dedicated headphone DAC is paired with four high-performance amplifier circuits designed for precise impedance matching across a wide range of headphone loads. Three output connectors are provided on the front panel: a 4.4 mm balanced pentaconn for balanced headphones, a 6.35 mm single-ended jack for standard headphones, and a full-size XLR balanced output for headphones terminated with XLR connectors. The dedicated headphone DAC and amplifier stage operate completely independently from the pre-out circuit, meaning headphone listeners receive a signal path optimized specifically for their listening mode.
Q: Does the HiFi Rose RS451 work as a DAC for an external digital source?
A: Yes, the HiFi Rose RS451 accepts external digital sources via its optical, coaxial, HDMI eARC, and USB 2.0 Type-B inputs, allowing it to function as a DAC and headphone amplifier for sources such as computers, televisions via eARC, CD transports, and other digital devices in addition to its primary role as a network streamer. The HDMI eARC input is particularly useful for routing television audio through the RS451's high-quality DAC stage and headphone outputs.
Q: What amplifiers or speakers pair well with the HiFi Rose RS451?
A: The HiFi Rose RS451's balanced XLR and unbalanced RCA pre-outputs connect directly to any integrated amplifier or preamplifier with compatible inputs. For a complete HiFi Rose system, the RS451 pairs naturally with the HiFi Rose RA280 integrated amplifier via its balanced XLR input, both of which are available at Vinyl Sound in Toronto. The RS451 is also well suited to powered monitor speakers with balanced inputs for a compact, high-performance desktop audio system, given its slim 3.62-inch chassis height and desktop-optimized proportions.
Q: Where can I buy the HiFi Rose RS451 in Toronto or Canada?
A: The HiFi Rose RS451 is available at Vinyl Sound, an authorized HiFi Rose dealer in Toronto, Canada. Vinyl Sound carries the full HiFi Rose lineup and provides expert advice on system matching, in-store demonstrations, and authorized Canadian warranty support for all HiFi Rose products.
Key Tech Specs
The RS451 pairs dual ES9027PRO DACs, one dedicated to the pre-out and one to the headphone stage, with the flagship-derived ROSE DPC Femto clock module and three front-panel headphone outputs.
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In Depth
ROSE DPC Module and Femto Clock
The RS451 inherits the ROSE DPC (Digital Processing Core) module directly from the flagship RS151. The DPC module precisely synchronizes all incoming digital audio signals to the Femto clock reference and converts them to I2S format before delivery to the DAC stage. Every processing block within the module is designed to maintain maximum signal accuracy, and the circuit responsible for the user interface and GUI is completely isolated from the digital audio signal path. This physical separation keeps the touchscreen, operating system, and network activity away from the audio circuit, a discipline carried over directly from the RS151.
Dual ES9027PRO DACs: Independent Pre-Out and Headphone Circuits
The RS451 uses two separate ESS SABRE ES9027PRO DAC chips, one dedicated exclusively to the pre-out section and one dedicated exclusively to the headphone output. This is not a shared or switched configuration: each DAC chip operates within its own precision circuit, optimized for its specific output stage and load requirements. The pre-out DAC feeds balanced XLR and unbalanced RCA outputs, while the headphone DAC is paired with four high-performance amplifiers for precise impedance matching, low noise, and the current delivery needed to drive demanding headphones. Three front-panel outputs cover 4.4 mm balanced pentaconn, 6.35 mm single-ended, and full-size XLR balanced, with no adapters needed.
ROSE NRA Filter and the Visible Audio Philosophy
Following the DAC stage, the RS451's analog outputs pass through the proprietary ROSE NRA (Noise Reduction Analog) filter. This circuit eliminates residual noise and maintains a flat frequency response across the entire audible range including extremely low frequencies, where conventional analog output filters typically introduce roll-off. The 8.8-inch IPS LCD touchscreen with 1920 x 480 resolution reflects HiFi Rose's Visible Audio design philosophy, the idea that the interface through which a listener navigates and controls their music should be as carefully considered as the audio circuits themselves. HDMI eARC input brings television audio into the system, and HDMI 2.0 output supports 4K UHD video at 60 Hz.
Technical Specifications
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