QSC, LLC — 00:60:74 (MA-L)

The OUI 00:60:74 belongs to QSC, LLC, an American manufacturer of professional audio, video, and control (AV) products based in Costa Mesa, California. The company traces back to 1968 as the Quilter Sound Company and was named QSC Audio Products, Inc. until a 2015 rebrand to QSC, LLC; as of January 7, 2025 it is owned by Acuity Brands following a $1.215 billion acquisition. The 00:60:74 prefix identifies networked AV hardware in QSC's Q-SYS ecosystem: Q-SYS Core processors, network amplifiers (CX-Q, SPA-Q, MPA-Q), NL-series PoE network loudspeakers, QIO I/O expanders, PoE touchscreen controllers, and video-conferencing endpoints — devices that communicate over standard 1GbE Ethernet on the Q-SYS OS platform. One naming caveat matters for any vendor-resolution work: a separate, unrelated "QSC AG" (a German telecom/ISP at Mathias-Brüggen-Str. 55, Köln) holds the distinct MA-L block 58:85:6E. The two share only a name; the slug vendor-qsc here resolves to the US AV manufacturer (00:60:74), and that disambiguation should be carried through to the published page. Because Q-SYS gear sits on enterprise networks, the OUI is a useful asset-classification signal; one substantive vulnerability, CVE-2020-24990 (directory traversal via an unauthenticated TFTP service), affected Q-SYS Core Manager 8.2.1.

IEEE assignment

00:60:74 → QSC, LLC, registered Costa Mesa, CA, US [Confirmed] — IEEE MA-L; udger.com

Registry / block size

MA-L (24-bit OUI) [Confirmed] — the IEEE MA-L registry. NOTE: IEEE's public OUI data publishes NO assignment/registration date (the IEEE MA-L registry columns are only Registry, Assignment, Organization Name, Organization Address); any "date registered" on third-party tools is a database artifact, not an IEEE fact.

HQ / country

Costa Mesa, California, US [Confirmed] — en.wikipedia.org/wiki/QSC_Audio_Products; qsc.com

Company status

active; owned by Acuity Brands since 2025-01-07 (acquired for $1.215B); formerly Quilter Sound Company (1968), then QSC Audio Products, Inc. until 2015 rebrand to QSC, LLC [Confirmed] — en.wikipedia.org/wiki/QSC_Audio_Products

Device types

networked AV (Q-SYS) — Core processors, network amplifiers (CX-Q, SPA-Q, MPA-Q), NL-series PoE network loudspeakers, QIO I/O expanders, PoE touchscreen controllers, video-conferencing endpoints; 1GbE Ethernet on Q-SYS OS [Confirmed] — q-syshelp.qsc.com, help.qsys.com

Notable products

Q-SYS networked AV platform, digital signal processors, power amplifiers, loudspeakers

Security context

CVE-2020-24990 (CVSS 3.1 7.5 HIGH) — directory traversal via unauthenticated TFTP (UDP/69) in Q-SYS Core Manager 8.2.1, allowing remote read of OS files; published 2020-10-28. QSC ships signed firmware + role-based access; not affected by Log4j (CVE-2021-44228).

[Confirmed] — nvd.nist.gov/vuln/detail/CVE-2020-24990, qsys.com/support/security-vulnerabilities/

Registration date

Unknown — IEEE publishes no OUI registration dates; third-party "date registered" values are database artifacts. [Confirmed null]

Name-collision note

"QSC AG" (German telecom/ISP, Köln, DE) holds a DISTINCT MA-L block 58:85:6E and is unrelated to QSC, LLC (US AV). The slug vendor-qsc resolves to the US AV manufacturer (00:60:74). [Confirmed] — the IEEE MA-L registry

Website

https://www.qsc.com (corporate); https://www.qsys.com (Q-SYS platform) [Confirmed] — qsc.com, qsys.com

Analyst note

00:60:74 on a globally-administered address reliably identifies Q-SYS AV hardware for inventory/classification; the German "QSC AG" name is a known false-match trap — it is a different company on 58:85:6E, not this entry.