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🔧 Plug in, power up, and never miss a beat with MFL’s ultimate cable tester!
The MFL 15-Plug Audio Cable Tester is a professional-grade, battery-powered device designed to test continuity and integrity across 15 different cable types including TRS, XLR, USB-C, and more. Featuring a rugged metal casing, LED indicators for quick diagnostics, and a 10-way switch for easy line selection, it’s the essential tool for audio engineers, tech managers, and live performers to ensure flawless connections every time.










| ASIN | B0972J2ZR9 |
| Best Sellers Rank | #17,784 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #29 in Network & Cable Testers |
| Brand | MFL. |
| Brand Name | MFL. |
| Color | Black |
| Compatible Devices | Audio equipment, microphones, instruments, computers, and other devices with compatible audio ports (TRS, XLR, RCA, DIN, Speakon, etc.) |
| Customer Reviews | 4.7 out of 5 stars 512 Reviews |
| Item Dimensions | 7.77 x 4.23 x 2.46 inches |
| Item Weight | 1.5 pounds |
| Item dimensions L x W x H | 7.77 x 4.23 x 2.46 inches |
| Manufacturer | MFL. |
| Measurement Type | Ohmmeter |
| Minimum Operating Voltage | 9 volts |
| Model | MF-CT20 |
| Part Number | MF-CT20 |
| Power Source | Battery Powered |
| Specification Met | CE |
| Style | 15-Plug |
| Style Name | 15-Plug |
| Unit Count | 1 Count |
M**H
Great deal for the money.
Great unit. Lots of options for testing. Cheers
A**E
Great tool to have
Nice product. The photos are outdated, although some customer photos are correct -- this DOES test USB-C. I've only had it a day but tested multiple XLR, 1/4", and various USB-type cables. I quickly found the 1 XLR that had kept failing me at gigs but then ended up back in the pile with all the other cables. I haven't had any problems with the battery compartment, as had been reported by others. One note: pay attention to your battery strength. I initially thought this was defective because the battery indicator would light bright green but individual line lights were very faint (to the point that I was testing cables in a dark closet). Turned out my 9v battery only had 3v left, and that appeared to affect the lines being tested but not the battery indicator. Weird. In any event, I put in a new 9v battery and all is well. Great tool to have.
J**G
Easy to set up and use
This is a fantastic piece of equipment. I had so many same type of cables I had no idea if they were data or charging. This tester allowed me to separate types, working or not working cables.
G**Y
15-p[lug tester: Pretty good deal, but BE AWARE OF THE FOLLOWING
For the price, this is a good tester. I play in bands and deal with many kinds of cables not to mention being the computer guy at home who sets up the network and troubleshoots PC issues for my family, so a tester like this is ESSENTIAL! But, a couple of things to be aware before you purchase: 1) No USB-C connectors, so you can't easily test these cables. You'll need another tester. 2) Although this has "banana" plug jacks, it DOES NOT COME WITH probes to plug into them that enable general electrical testing. Apparently you have to purchase those separately. 3) You cannot directly test banana plug cables with this. Those cables have plugs on each end with two prongs and there's no jacks for that (not the same as the single pair banana jack they have on this unit). However, if you get the probes previously mentioned, you can plug them into the two banana jacks and do a general electrical test on one wire at a time in your banana cable.
A**Y
It really works
Very solidly built used it to check a variety of cables that I use for my IEM rack and keyboards
S**8
Great for any live or studio engineer
I'm a live sound engineer and can say one of these are in every pro-audio company's workbox I've ever encountered. I recently started a mid-level recording studio and this saved me several hours testing cables I was making as I wired the place up. If you are making your own cables, even semi-frequently, this will save you several hours of banging your head against the wall wondering why your signal won't come through.
C**5
Love this!
Easy to use, super helpful
M**.
Helps find problem cables
This tester helped me find 3 cables that were intermittent, saving me further frustration. Very easy to use and covers most common types of cables. Worth it if you have cables that are suspect.
A**R
Cable tester
This is ideal for my pat testing does most cables I have tested all my equipment all in good working order One downfall is that I wonder if its been sent back by another customer as it looks like the battery compartment has a little plastic chip off Can live with that Would I purchase another defiantly
O**O
Requerido
Muy bueno y se puede saber cómo esta conectado los cables cuando tiene alguna conversión de las terminales
T**T
arrived quickly and works well
Works as advertized
J**.
Cable yester
Great well made unit With the new option of powercon testing Great unit
W**.
Not Reliable
Item has failed after a couple months. Sat in our workshop barely used.
Trustpilot
5 days ago
4 days ago