effe-02 — Audiophile Ethernet to SFP Optical Converter

Overview:

The effe-02 bridges standard copper RJ45 networks with high-speed optical SFP transceivers. Designed to strip away high-frequency router noise and ground loops, it allows you to run optical fiber directly to an SFP-equipped streamer or pair with another effe unit for total physical separation.

Key Features:

Small size: 75mm x 73mm x 29mm, weight 146g
Ultra-low noise (4 uV RMS) linear regulator module
Ultra-high precision / ultra-low phase noise clock module.
Open SFP port for custom transceiver & fiber selection.
Premium audiophile components (Nichicon for Audio capacitors).

Full aluminium case (Silver / Black)

Small footprint: 75mm x 73mm x 29mm, weight 146g

Audiophile Components: Ultra-low noise LDO, precision clock, and Nichicon audio capacitors

Open SFP port for custom transceiver & fiber selection.

Low Power Consumption

USB-C DC IN 5 V 0.6 A

Power Source Recommendations & System Synergy

To allow audiophiles the freedom to optimize their system power, effe-02 and effe-03 do not include a power supply unit in the package.

Both units operate on 5.0V DC via USB-C (effe-02 requires min. 0.6A; effe-03 requires min. 1.0A). However, the degree to which a high-end power source upgrades your sound depends heavily on your connection architecture:

1. When Connecting via Copper Ethernet (e.g., Streamer RJ45 Port)

Impact of LPS: Very Significant.
Why: When your streamer is connected via a copper Ethernet cable, any electrical noise, ground currents, or ripple from a substandard power source on the effe unit can bleed across the physical copper link directly into your streamer's network receiver circuit.
Recommendation: We strongly recommend pairing your effe device with a high-quality Linear Power Supply (LPS) or a dedicated audiophile low-noise USB power source. Avoid standard computer USB ports or noisy switching phone chargers, as they will compromise the noise-isolation benefits.

2. When Connecting via SFP Optical Fiber (e.g., Streamer SFP Port / Eversolo Series)

Impact of LPS: Minor / Minimal.
Why: Because the fiber optic cable achieves 100% galvanic isolation, physical electrical noise and ground potentials are completely blocked from crossing over to your streamer. Even if a simpler power source is used on the effe side, electrical noise cannot travel across the light path into your optical-equipped DAC or streamer.
Recommendation: While a linear power supply still ensures the absolute lowest internal clock jitter and cleanest local processing inside the effe unit, the sonic gains are much more subtle when running pure optical fiber. A clean, reliable 5V USB power source or a standard adapter is entirely adequate for stellar performance in a pure fiber setup.

Finisar FTLF1318P3BTL

To ensure 100% plug-and-play reliability without compatibility headaches, we explicitly recommend and certify the Finisar FTLF1318P3BTL SFP transceiver module.

Tested & Certified: Fully tested with effe-02, effe-03, and flagship SFP-equipped streamers (such as the Eversolo T series).
Industrial-Grade Low Noise: Built with ultra-low electrical noise characteristics and high thermal stability to prevent high-frequency interference.
Direct Availability: To simplify your setup, genuine Finisar FTLF1318P3BTL modules are available directly for purchase on our official website, individually or bundled with our custom pre-tested LC-LC single-mode fiber cables.

30-Day Home Trial

Dawn Technology sells and ships directly to users, saving you around 40% compared to purchasing through a dealer. We’re so confident in the quality of our products and designs that we offer a 30-day, no-questions-asked return policy. Experience the effe-isolator in your own system, in your own room—where it truly matters—for up to 30 days. If you’re not completely satisfied, return it for a refund.

How It Works

Purchase the item(s).
Once your order is delivered, your 30-day trial begins.
If you wish to return the item(s) within that period, contact us by email to receive a return authorization number (RMA).
Return the item(s) to us via your chosen courier at your expense.
Once we receive the return, you’ll receive a refund within 7 to 10 days.

Terms

All return shipping costs are the customer's responsibility. We do not cover or reimburse return shipping expenses. Please use a trackable shipping method to return your items, as we are not responsible for lost or undelivered packages.
The returned item(s) must be in the same condition as when you received them. If there are signs of user-related damage or missing accessories, we may deduct a portion of the refund.
Shipping costs are non-refundable.
The prices listed on our website do not include any applicable duties and VAT in the customer's country. These charges are the responsibility of the customer and are not refundable.