Matrix Audio SI-1 — Decision Profile
L2 Decision Profile · documentation + editorial assessment
Quick verdict
A wired network path requiring the documented isolation component after network topology is confirmed
Avoid if: A router, Wi-Fi access point, surge-safety guarantee or proven audible upgrade
Evidence checked: 2026-10-17. Manufacturer documentation; no independent SoundPath Lab listening, measurement, compatibility or firmware retest.
System conditions
Keep the existing router/switch and audio endpoint; confirm port rate, mains version and network connectivity before assessing any change
Documented specifications
| Item | Specification and conditions |
|---|---|
| Role | Ethernet network isolator, not an audio player or DAC |
| Network | Two RJ45 ports; 10/100/1000 Mbit/s stated; one photoelectrically isolated path |
| Power | Factory 100–120 or 220–240 V mains version; <15 W consumption |
| Weight | 1.54 kg manufacturer specification |
Limits and source qualifications
No independent noise, packet integrity, surge-isolation certification or audible benefit was established; marketing standards labels are not accepted as certification
Alternatives by need
SL1P is a streamer and ND-1 a DAC; both perform different roles and are complements rather than substitutes for network isolation
Keep or upgrade
Keep a working system that already meets these requirements. Consider a change only when the documented connection, control or system role solves a specific unmet need; no measured sound-quality upgrade is claimed.
Evidence, support and reassessment
Review scope
Exact-model primary specification and connection sections cited below were reviewed. Source claims and editorial system-fit reasoning are distinct from independent listening, measurement, compatibility or firmware tests; none were added.
Actual sound, under-load output, room/ear fit, latency and long-term reliability remain untested. Existing scores, Builder qualification and owner/test records were not reassessed.
Firmware and regional support
Local stock, authorized sales, transaction prices and long-term support duration are not established by this documentation review. Dated regional announcements apply only to their stated territory and terms. Existing dated price and owner evidence is retained.
No installed firmware version or issue resolution was retested. Follow the exact-model official support workflow.
Reassess when evidence changes
Reassess on verified hardware or firmware changes, clarification of a source conflict, material support/compatibility changes, or accepted independent testing.
No new six-month ownership evidence was added; existing owner and issue records remain unchanged.
Related records and tools
- Silent Angel Bremen SL1 Plus (SL1P)
- Matrix Audio ND-1
- Product directory
- System Builder
- Issues and limitations
- Firmware and app tracker
- Compare this product
Sources checked
Revision: 2026-10-17 — L0/L1 to L2 after model-level documentation and decision review. Product identity and existing scores/qualification retained. L2 is evidence coverage, not independent test acceptance.
Member knowledge · editor reviewed
Questions, owner experience and product issues
Join the live member discussion below, or submit structured experience and issue reports for editorial review.
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