The SA-CT123 cable tester is built for sound engineers, musicians, and venue techs who need to quickly diagnose cable problems during setup or breakdown. When you're troubleshooting a dead monitor or silent PA channel, this tester identifies the culprit fast.

This compact unit tests continuity across seven connector types: XLR (3-pin), Speakon (2-pole and 4-pole), 1/4" TRS and TS, RCA, and MIDI (3-pin and 5-pin). The bright yellow 14-gauge steel housing makes it easy to spot in a dark venue, while the built-in test leads handle oddball connectors not found on the main unit.

The real value comes from testing hybrid cables — Speakon to 1/4", XLR to TRS, or any custom combination your rig demands. An audible signal confirms good connections, so you can work hands-free while following cable runs. Instructions are printed directly on the housing, eliminating the need to dig through manuals during load-in.

Whether you're running sound for a 200-person club, managing a church PA system, or setting up a mobile DJ rig, cable failures happen at the worst times. This tester works equally well for permanent installations and touring rigs where cables take a beating.

Simply insert a 9-volt battery (not included) and you're ready to test. Each unit includes test leads for non-standard connectors. Seismic Audio backs every SA-CT123 with a one-year warranty and fast shipping.

Technical Specifications

Frequently Asked Questions

What cable types can the SA-CT123 test?

The SA-CT123 tests XLR (3-pin), Speakon (2-pole and 4-pole), 1/4" TRS and TS, RCA, and MIDI (3-pin and 5-pin) connectors. It also handles hybrid cables like Speakon-to-1/4" or XLR-to-TRS combinations. The included test leads let you check cables with connectors not found on the main unit.

How does the audible signal feature work?

When you connect a cable with good continuity, the tester produces an audible tone to confirm the connection. This lets you work hands-free while tracing cable runs or testing multiple connections quickly. The signal only sounds when proper contact is made between the cable's input and output connectors.

Is this suitable for both small venues and larger installations?

Yes, the SA-CT123 works equally well for intimate 50-person venues and larger 500+ capacity halls. The compact size makes it perfect for mobile rigs, while the durable 14-gauge steel construction handles the demands of permanent installations where cables are tested regularly.

Do I need any additional equipment to use this tester?

You only need a standard 9-volt battery, which isn't included with the unit. The tester comes with test leads for non-standard connectors, and all operating instructions are printed directly on the bright yellow housing. No external manuals or additional accessories are required.

How does buying a 3-pack benefit my operation?

The 3-pack ensures you have backup testers for multiple crew members or different locations within a venue. You can keep one at the mixing console, one with the stage crew, and one in your repair kit. This prevents bottlenecks during setup when multiple cable issues need simultaneous diagnosis.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer. For more information, go to: www.P65Warnings.ca.gov