13 linked sources · 18 scoped claims · 0 sources with inspection/access flags.
Assessment 2026-10-22 · earliest scheduled source review 2026-12-30. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.
Inspect 13 source scopes, access limits and dates
Neutrik · Manufacturer / product-owner domain · inspected 2026-10-01 · due 2026-12-30
Within inspection window
Scoped support: 3.5 mm, 3-pole phone plug physical example.
Not established / limitations:
Locator: Product identification
Toshiba Electronic Devices & Storage Corporation · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05
Within inspection window
Scoped support: Optical transmission principle and separation of the fiber path from module electronics only.
Not established / limitations: This general fiber-coupler FAQ is not a consumer TOSLINK mechanical standard, module pin assignment, audio-codec specification or universal voltage rating.
Locator: FAQ explanation: optical transmitter, fiber, receiver and separate module electronic interfaces.
Apple · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05
Within inspection window
Scoped support: Apple distinguishes metal 3.5 mm analog plugs from 3.5 mm optical plugs and describes optical input on some Mac computers only.
Not established / limitations: General guide, not an exact-model optical port inventory. Optical input on some Macs must not be treated as output support or as support on every headphone socket.
Locator: Learn about the ports on your Mac: Analog audio out and Audio in table rows.
Apple · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05
Within inspection window
Scoped support: Exact Early 2015 13-inch Retina MacBook Pro audio-role wording only.
Not established / limitations: The page says digital/analog; it does not itself specify an optical connector geometry, electrical pin map, sample-rate limit or capabilities of later MacBook models.
Locator: Audio section: 3.5 mm headphone jack and digital/analog line-out support.
Google · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05
Within inspection window
Scoped support: Exact Chromecast Audio combination-output role only, not a generic 3.5 mm socket claim.
Not established / limitations: No universal miniplug support, optical input, simultaneous-use guarantee, full codec list or connector mechanical drawing is established by this specification.
Locator: Ports and connectors: 3.5 mm jack with analog and optical digital audio output.
Focusrite · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05
Within inspection window
Scoped support: Model/generation-specific optical S/PDIF setup distinctions and the listed interfaces’ inability to decode DTS/Dolby Digital.
Not established / limitations: Not a universal TOSLINK format or channel-count ceiling. Optical ADAT-only versus switchable S/PDIF support belongs to the specified interface generation and operating mode.
Locator: Updated 7 January 2026: Devices with Digital Optical Audio Outputs; 1st/2nd and 3rd Gen Scarlett sections; PCM and decoder note.
Hosa Technology · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05
Within inspection window
Scoped support: Exact GOP-490 optical form adaptation only. No analog/digital signal conversion is represented.
Not established / limitations: Marketing examples such as iMac do not select a model. No pinout, insertion dimensions, direction guarantee, codec decoder, loss budget or universal headphone-jack compatibility is provided.
Locator: Product description and connector labels: male TOSLINK optical cable to 3.5 mm combo jack; GOP-490 identity.
Neutrik · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09
Within inspection window
Scoped support: Exact NTP3RC qualitative exterior and perpendicular cable exit; not scale geometry or contact wiring.
Not established / limitations: Exact NTP3RC qualitative exterior and perpendicular cable exit; not scale geometry or contact wiring. Raw source files are not bundled; linked observation and locator retained.
Locator: Sheet 1 of 1; upper-right side elevation. Revision A, changed 30-Jul-2012.
Switchcraft · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09
Within inspection window
Scoped support: Named four-conductor jack and switching description only; no CTIA/OMTP assignment or terminal-count inference.
Not established / limitations: Named four-conductor jack and switching description only; no CTIA/OMTP assignment or terminal-count inference. Raw source files are not bundled; linked observation and locator retained.
Locator: Configuration: four conductors, horizontal PC/surface mount, jack; Electrical: TRRS (Tip/Ring Switch).
Focusrite · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09
Within inspection window
Scoped support: Named fourth-generation Solo only. Headphone versus balanced line-output role and TS/TRRS headphone warning; not universal device support. New scope on an already catalogued URL, not a new unique document.
Not established / limitations: Named fourth-generation Solo only. Headphone versus balanced line-output role and TS/TRRS headphone warning; not universal device support. New scope on an already catalogued URL, not a new unique document. Raw source files are not bundled; linked observation and locator retained.
Locator: Headphone Output and Speaker Outputs sections; page update 16-Jul-2026.
CLIFF · Unclassified publisher domain · inspected 2026-10-11 · due 2027-01-09
Within inspection window
Scoped support: Only those dated item rows and the shared FM652xx photograph. The photograph does not identify a cable length. Caps obscure the optical ends. Ambiguous numerical aperture and material units are not imported.
Not established / limitations: Only those dated item rows and the shared FM652xx photograph. The photograph does not identify a cable length. Caps obscure the optical ends. Ambiguous numerical aperture and material units are not imported.
Locator: Issue 5, copyright 09/2023; PDF pp.1–2: FM65010 adaptor and FM65215/20/25 mixed-ended optical cables. Only p.2 photograph visually inspected.
Android Open Source Project / Google · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19
Within inspection window
Scoped support: The two ordered conductor schemes exchange microphone and ground while retaining the same nominal four-conductor plug form.
Not established / limitations: Android accessory requirements only; not a list of supported devices, universal headset compatibility, switch-button compatibility or jack solder-lug layout. Diagram image files were not separately inspected; prose and mechanical table support these claims.
Locator: Mechanical table: four-conductor3.5mm plug, CTIA LRGM and OMTP LRMG; Reference headset test circuits introductory paragraph states MIC/GND exchange.
CLIFF Electronic Components · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19
Within inspection window
Scoped support: The manufacturer explicitly describes the rectangular and3.5mm mini forms as optical. No analog-to-optical conversion or universal audio-format ceiling follows.
Not established / limitations: Product-family optical identification only. The3.5mm similarity warning is editorial caution, not measured user confusion. No dimensional tolerances or source photos were imported.
Locator: Opening optical/light transmission description; TOSLINK to Mini-TOSLINK3.5mm lead sets; Mini-TOSLINK optical jack plug; FM65215/FM65220/FM65225 and FM65010 adapter listings.
Trace 18 claims to their source records
C019A · P019
A 3.5 mm TRS plug has three conductive sections: tip, ring and sleeve.
Claim scope: Consumer identification / documented standard or product class only
Source links: S022 · Evidence trail → (private workspace)
C019B · P019
Neutrik identifies NTP3RC as a three-pole 3.5 mm male audio plug with solder termination; its customer drawing shows the plug axis at a right angle to the cable exit.
Claim scope: Exact NTP3RC component role and exterior; no channel mapping or device compatibility.
Source links: S022 · S523 · Evidence trail → (private workspace)
C020A · P020
CTIA and OMTP headset arrangements can assign microphone and ground differently within a 3.5 mm TRRS interface.
Claim scope: Consumer identification / documented standard or product class only
Source links: S844 · Evidence trail → (private workspace)
C020C · P020
Switchcraft identifies 35RASMT8CHNTRX as a four-conductor TRRS jack with tip/ring switching, horizontal mounting and surface-mount PC termination.
Claim scope: Exact switched jack; no inference that four conductors means four PCB terminals or a particular headset wiring scheme.
Source links: S527 · Evidence trail → (private workspace)
C020D · P020
Focusrite cautions that TS or TRRS headphones and adapters are unlikely to work properly with the Scarlett Solo 4th Gen headphone output and directs users to TRS headphones and adapters.
Claim scope: Manufacturer warning for the named interface only; not a universal exclusion of TRRS headphones from all audio devices.
Source links: S528 · Evidence trail → (private workspace)
C024A · P024
TOSLINK and Mini-TOSLINK are optical connection forms, not analog metal-contact audio interfaces.
Claim scope: Consumer identification / documented standard or product class only
Source links: S845 · Evidence trail → (private workspace)
C024B · P024
Toshiba describes a digital optical path from a transmitter through fiber to a receiver, with separate electronic interfaces inside the modules. Those module interfaces are not electrical contacts on the optical cable end.
Claim scope: General optical-transmission principle only; no consumer connector dimensions, module pin numbers or voltage ratings are asserted.
Source links: S405 · Evidence trail → (private workspace)
C024C · P024
Focusrite states that optical inputs on its 1st/2nd-generation Scarlett interfaces support ADAT rather than the optical S/PDIF setup described in its article; its 3rd-generation 18i8 and 18i20 instead have an optical S/PDIF mode.
Claim scope: Specified Focusrite generations and operating mode only; this difference is not a property that can be read from the optical connector shape.
Source links: S409 · Evidence trail → (private workspace)
C024D · P024
For the listed interface setup, Focusrite calls for linear PCM and says its interfaces cannot decode DTS or Dolby Digital surround-encoded input. This is a receiver/decoder limitation, not a claim that an optical cable cannot carry encoded audio.
Claim scope: The article’s listed Focusrite interfaces only; no universal TOSLINK codec, sample-rate or channel-count ceiling is published.
Source links: S409 · Evidence trail → (private workspace)
C024E · P024
CLIFF lists FM65215 as a cable with a TOSLINK end and a 3.5 mm optical-jack end.
Claim scope: The listed optical cable only. This is not evidence of analog-to-digital, electrical-to-optical or codec conversion.
Source links: S533 · Evidence trail → (private workspace)
C025A · P025
Mini-TOSLINK uses a 3.5 mm optical form that can be confused with analog audio connectors.
Claim scope: Consumer identification / documented standard or product class only
Source links: S845 · Evidence trail → (private workspace)
C025B · P025
Apple distinguishes a metal 3.5 mm analog plug from a 3.5 mm optical plug, and describes a TOSLINK miniplug adapter or optical lead for optical digital input on some Mac computers.
Claim scope: General Mac guide terminology and some-model optical input only; not proof of output support, a socket pinout or every Mac model’s capabilities.
Source links: S406 · Evidence trail → (private workspace)
C025C · P025
Google explicitly lists the Chromecast Audio 3.5 mm jack as providing analog and optical digital audio output.
Claim scope: Exact Chromecast Audio specification only; no optical input, simultaneous-mode behavior or support on unrelated 3.5 mm sockets is inferred.
Source links: S408 · Evidence trail → (private workspace)
C025D · P025
Apple lists digital/analog line-out support at the headphone jack of the MacBook Pro (Retina, 13-inch, Early 2015). The wording is preserved without adding a connector pin map or extending it to other models.
Claim scope: Exact Apple model and source wording only; the specification does not itself establish optical geometry, input capability or later model support.
Source links: S407 · Evidence trail → (private workspace)
C025E · P025
Hosa describes GOP-490 as adapting a male TOSLINK optical cable to a 3.5 mm combo jack, with TOSLINK and Mini-TOSLINK connector labels.
Claim scope: Named optical adapter as a connector-form example only; not evidence that a generic analog headphone jack acquires optical support.
Source links: S410 · Evidence trail → (private workspace)
C025F · P025
CLIFF distinguishes the FM65010 3.5 mm optical-jack adaptor from the separately listed FM65215 mixed-ended optical cable.
Claim scope: Those item identities, not universal compatibility with every 3.5 mm socket. The exact FM65010 image was not visually inspected.
Source links: S533 · Evidence trail → (private workspace)
C025G · P025
The CLIFF FM65215, FM65220 and FM65225 table specifies different cable lengths beside a shared optical-cable photograph.
Claim scope: The photograph supports a named-series view, not identification of one exact cable-length code. The depicted tip remains capped in the original study.
Source links: S533 · Evidence trail → (private workspace)
C332A · P332
Hosa GOP-490 is an optical form adapter for a male TOSLINK cable and a 3.5 mm combo jack. The documented path stays optical; analog conversion, codec decoding and compatibility with an arbitrary socket are not established.
Claim scope: Exact GOP-490 represented path only; no broad device recommendation, digital/analog conversion, direction certification or connector dimensions.
Source links: S410 · Evidence trail → (private workspace)
Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.
