The SS-1 Pro is an audio grade network switch and isolator, meaning it sits in the Ethernet path ahead of your streamer to clean up and retime the signal rather than to decode audio itself. Unlike a consumer switch built purely to move packets, this device treats the network chain as a source of electrical noise and timing jitter that can propagate downstream into a streamer or network capable DAC. It addresses that by combining galvanic isolation, dedicated clocking, and a filtered power supply inside a single enclosure. In practical terms, you place it between your router or upstream network gear and your streaming endpoint, and its job is to hand off a quieter, more precisely timed signal to whatever comes next.
Why would a network switch matter for sound quality at all?
It matters because Ethernet is an electrical interface, and the physical and electrical behavior of that link can influence the analog stages further down the chain. Ethernet is packet based and error corrected, so the audio data itself arrives intact. What the SS-1 Pro targets is the secondary path: high frequency noise riding along on cabling and grounds, plus the timing behavior of the interface that a downstream streamer must lock to. By isolating and reclocking the connection, the device aims to reduce the amount of that electrical contamination and timing irregularity presented to the streamer input. Whether the result is audible depends on your system and your streamer, but the engineering intent is clear and measurable in noise and jitter terms.
Topology and Core Mechanisms
How does the galvanic isolation work?
The SS-1 Pro applies galvanic isolation on the network path, which breaks the direct electrical connection between the upstream side and the downstream side while still passing the data. Galvanic isolation means there is no continuous conductive path for current across the boundary; the signal crosses via a coupling method that transfers data without transferring the ground and noise currents that would otherwise flow through a shared conductor. In a network chain, that matters because switches, routers, and computers upstream inject common mode noise and create ground loops that couple into sensitive downstream equipment. By interrupting that shared path, the isolator prevents a large amount of that noise from ever reaching the streamer, letting the downstream device operate against a cleaner reference.
What does the internal clock do, and why is it described as high precision?
The internal high precision clock provides the timing reference for the device's network functions, giving the retransmitted signal a stable and low jitter timing base. Every network interface relies on a clock to define when bits are transmitted and interpreted, and the quality of that clock affects the timing integrity of the link. A cheap oscillator in a generic switch has relatively loose tolerance and higher phase noise, which can translate into more timing uncertainty in the packet stream. By using a higher precision clock, the SS-1 Pro regenerates the outgoing signal with tighter timing, so the streamer receives a signal whose timing behavior is more consistent. This is the reclocking aspect of the device, and it works hand in hand with the isolation to reduce two different classes of degradation at once.
What is the reclocking function actually doing to the signal?
The reclocking function regenerates the network signal against the device's own clean clock before sending it onward, effectively refreshing the timing rather than passing the incoming timing straight through. When data enters a standard switch, the outgoing signal often inherits some of the timing irregularity of the source. A reclocking design instead recovers the data and retransmits it referenced to a local, more stable clock, so the jitter accumulated across upstream hops is not simply forwarded. Placed immediately ahead of a streamer, this gives the streamer's own input circuitry a cleaner and more predictable signal to lock onto, which reduces the work its recovery circuits must do.
Power Supply and Chassis
How is the SS-1 Pro powered, and why does that matter here?
The SS-1 Pro uses a filtered supply designed for low noise operation, which is significant because the power feeding the clock and network circuitry directly influences how clean their output can be. A precision clock and isolated network stages are only as quiet as the rails powering them; noise on the supply can modulate the clock and reintroduce the very interference the device is meant to remove. A filtered supply reduces ripple and high frequency content on those rails, giving the sensitive timing and isolation circuits a stable foundation. In a device whose entire purpose is noise and jitter reduction, the power supply is not a supporting player but a central part of the design, since any compromise there would undermine the isolation and clocking downstream.
What does the aluminum chassis contribute beyond looks?
The aluminum enclosure provides mechanical rigidity and a measure of shielding for the internal circuitry, both of which serve the device's low noise goals. A metal chassis helps contain and deflect electromagnetic interference, keeping external radiated noise from coupling into the clock and network stages, and keeping the device's own high frequency activity from radiating outward. Aluminum specifically offers good conductivity for shielding purposes while remaining nonmagnetic, which is desirable near sensitive timing circuits. The enclosure also gives the internal components a stable platform, which is relevant because clock oscillators can be sensitive to vibration and mechanical disturbance.
Connectivity and System Integration
How many standard Ethernet ports does it have, and at what speeds?
The SS-1 Pro provides two 100Mbps RJ45 ports and six 2.5Gbps RJ45 ports, giving you eight copper connections across two speed tiers. The two 100Mbps ports are deliberately speed limited, which is useful for audio endpoints since many streamers negotiate a 100Mbps link and a lower link rate reduces the switching activity and associated high frequency noise on that connection. The six 2.5Gbps ports offer higher bandwidth for devices that benefit from it or for connecting to faster upstream infrastructure. Having both tiers in one unit means you can dedicate the slower ports to your critical audio endpoints while using the faster ports for the rest of your network, all while every port benefits from the device's isolation and reclocking.
What are the SFP ports for?
The SS-1 Pro includes two 10Gbps SFP/SFP+ cages that accept either fiber optic modules or RJ45 modules, giving you flexibility in how you connect to the rest of your system. SFP cages are modular ports: you insert a transceiver module matched to the medium you want, whether that is optical fiber or copper. Fiber is particularly relevant to an audio focused device because an optical link is inherently galvanically isolated; light carries no electrical noise across the connection, so using fiber upstream provides an additional isolation barrier before the signal even reaches the device's own isolation stage. If you prefer copper, an RJ45 module lets these ports behave like high speed wired connections instead. The 10Gbps rating gives ample headroom for backbone or uplink duty.
Can I connect an external clock, and how?
Yes, the SS-1 Pro has a 10MHz reference input with a 50 ohm impedance, allowing you to feed it a master clock from an external clock source. The 10MHz standard is a common reference frequency in audio and professional gear, and the 50 ohm specification tells you the input is designed for a properly terminated coaxial connection to preserve the integrity of that clock signal. When you supply a stable external 10MHz reference, the device can slave its timing to that source, which is useful if you already run a high quality master clock and want the switch to share the same timing discipline as other clocked devices in your chain. If you do not have an external clock, the internal high precision clock handles timing on its own, so the input is an option rather than a requirement.
How do I actually place this device in my system?
You place the SS-1 Pro between your upstream network and your streamer, feeding it from your router or existing switch and connecting the streamer to one of its ports. A typical arrangement uses an SFP fiber link or one of the RJ45 ports for the incoming connection from your network, then routes your streamer to one of the two 100Mbps ports so that endpoint sees the isolated and reclocked signal at a link speed suited to audio playback. Additional streaming devices or network components can attach to the remaining 2.5Gbps ports. Because the isolation and reclocking apply within the device, the goal is to have the last network hop before your streamer be this unit, so the streamer benefits from the cleanest handoff.
Interpreting the Design and Measurements
What do the specifications tell us about the intended sonic effect?
The specification set describes a device engineered to reduce two measurable problems, electrical noise and timing jitter, at the point where they most easily leak into an audio system. The combination of galvanic isolation on the network path, a high precision internal clock, a filtered low noise supply, and a shielding aluminum chassis all point toward lowering the noise floor and tightening timing at the streamer input. In measurement terms, isolation reduces common mode and ground borne noise, while reclocking against a stable oscillator reduces the timing uncertainty of the outgoing signal. These are the mechanisms by which network conditioning can influence downstream analog performance, since noise and jitter reaching a DAC's clock and analog stages are what ultimately shape the sound.
What should an experienced listener realistically expect?
An experienced listener should expect refinements in the noise related aspects of reproduction rather than a change in the audio data, because the device conditions the transport, not the content. The audible payoff from network conditioning tends to show up as lower background noise and improved clarity when a system is otherwise resolving and the streamer is sensitive to input conditions. The degree of change depends heavily on how noisy your upstream network is and how well your streamer already rejects incoming noise and jitter. The SS-1 Pro gives you multiple tools to work with, including fiber isolation via the SFP cages, speed limited ports for endpoints, and the option of an external 10MHz reference, so you can tailor the integration to your particular chain and evaluate the result on your own terms.
