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Following the successful
launch of the N50, we are
pleased to introduce one of our
key initiatives to further
enhance its value — a dedicated
network connectivity solution
using optical cable, developed
exclusively for the N50.
The Last Frontier of Digital
Audio Purity
The Aurender N50 embodies
Aurender's commitment to
eliminating noise at every stage
of the digital playback chain.
The N50's Triple Chassis
Architecture, OCXO controlled
clock, and linear power supply
are all designed to create a "pitch-black"
background, allowing music to
unfold naturally. Aurender has
now turned its attention to the
network connection itself, which
is the last potential source of
contamination. While the N50's
standard "7-fold Galvanic
Isolated Gigabit LAN Module"
already represents the cutting
edge of copper-based Ethernet
technology, the SFP optical
Ethernet module provides a
theoretically perfect level of
isolation. This module is not
meant to correct flaws, but
rather serves as the ultimate
upgrade, replacing the
electrical network connection
with a pure optical data link.
SFP stands for Small Form-factor
Pluggable. It is a compact
transceiver module that converts
network data signals between
electrical and optical formats.
Noise in Copper Ethernet
Standard copper Ethernet cables
(Cat5/6/7) using RJ45 connectors
are effective for data
transmission but are inherently
susceptible to electrical noise.
- Long runs of copper wiring in
a network can act like antennas,
picking up noise radiated from
routers, network switches,
computers, and other household
appliances. This high-frequency
EMI/RFI noise can travel down
the cable and infiltrate
sensitive audio circuitry.
- Potential differences can
arise when network components
are connected to different
electrical grounds. This can
cause low-frequency hum and
noise currents to flow through
the Ethernet cable's shield or
signal path, degrading the audio
system's noise floor.
Optical Transmission as the
Ultimate Insulator
> Optical transmission is
the principle of completely
separating electrical circuits
to prevent the direct flow of
current. No conductive path
exists between the isolated
sections.
> Fiber optic cables,
typically made of glass or
plastic, transmit data as pulses
of light. Since glass is an
electrical insulator, it is
physically impossible for
electrical currents from EMI/RFI
or ground loops to pass through.
This provides a "perfect" form
of galvanic isolation.
> While the N50's
standard LAN port already
implements excellent "7-fold
galvanic isolation" using
transformers, transformer
isolation relies on magnetic
coupling between two
electrically separated wire
coils. In extreme cases or
poorly designed systems,
high-frequency noise can
capacitively couple through this
barrier.
> Otical isolation is
fundamentally different and more
complete. It does not simply
impede unwanted currents but
creates a physical discontinuity
in the conductor, making
electrical transmission
impossible.
> The SFP module elevates
the N50's level of isolation
from "state-of-the-art
electrical isolation" to "theoretically
absolute physical isolation",
shielding the N50's extremely
sensitive audio circuitry from
the unpredictable and
electrically "dirty" environment
of a user's home network.
Key Benefits of the N50 SFP
Optical Ethernet Module:
> By completely blocking
all electrical noise from
entering via the network, the
SFP module creates an extremely
quiet, "pitch-black" background.
This allows the most subtle
musical details, micro-dynamics,
spatial reverberations, and
harmonic textures to emerge with
astonishing clarity and realism.
> A noise-free environment
enables the N50's ultra-precise
OCXO clock to operate with
maximum stability, free from
phase noise and jitter that
could be induced by electrical
interference. The result is a
more focused and stable
soundstage, sharper transient
attacks, and a more natural,
"relaxed" rhythmic flow.
> The performance of
standard network streamers can
be influenced by the quality of
upstream routers, switches, and
cabling. The SFP module renders
the N50's performance completely
independent of these variables.
It creates a "firewall" against
noise, ensuring consistent,
reference-level performance
regardless of the complexity or
quality of the user's home
network.
> For audiophiles who
rely on high-resolution
streaming services such as TIDAL
and Qobuz, the SFP module
ensures that the incoming data
stream is delivered to the N50's
cache memory in its purest form,
free from all the electrical
noise ubiquitous in modern
connected homes.
Synergy with the Aurender
NH10 Audiophile-Grade Network
Hub
Using the N50 SFP module in
conjunction with the NH10 allows
for the minimization of noise
and the achievement of perfect
galvanic isolation across the
entire digital audio chain, from
the network
to the player, pursuing ultimate
sound quality.
Package Contents:
- 1 SFP module - silver or black
- 1 2m fiber optic cable
Installation
This module is user-installable,
and can replace the existing
Ethernet module on the N50's
rear panel within minutes.
Product Positioning
An essential final-step
upgrade for N50 owners seeking
the absolute pinnacle of digital
audio performance and complete
isolation from network-related
sound
degradation.
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