---
product_id: 17128761
title: "Elite Core OSP CT-04C Cable Tester, Speaker"
brand: "o.s.p"
price: "C$6637"
currency: NIO
in_stock: true
reviews_count: 10
url: https://www.desertcart.ni/products/17128761-elite-core-osp-ct-04c-cable-tester-speaker
store_origin: NI
region: Nicaragua
---

# Instant LED continuity check Multi-connector versatility Rugged metal build Elite Core OSP CT-04C Cable Tester, Speaker

**Brand:** o.s.p
**Price:** C$6637
**Availability:** ✅ In Stock

## Summary

> 🔧 Plug in, power up, and never miss a beat with the ultimate cable tester!

## Quick Answers

- **What is this?** Elite Core OSP CT-04C Cable Tester, Speaker by o.s.p
- **How much does it cost?** C$6637 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/17128761-elite-core-osp-ct-04c-cable-tester-speaker)

## Best For

- o.s.p enthusiasts

## Why This Product

- Trusted o.s.p brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Operation:** 9-way selector knob makes switching cable types intuitive and fast
- • **Compact & Durable Design:** Heavy-duty metal housing built to survive the rigors of professional use
- • **Trusted Support & Reliability:** Elite Core’s CEO-level customer care ensures your tester works flawlessly
- • **Universal Cable Compatibility:** Test XLR, TRS, Speakons, MIDI, RCA, USB, RJ45 & DMX with one device
- • **Instant Pin-by-Pin Diagnostics:** LED indicators confirm every conductor’s continuity in seconds

## Overview

The Elite Core OSP CT-04C Cable Tester is a professional-grade, battery-powered device designed to verify continuity and connection integrity across a wide range of audio, network, and MIDI cables. Featuring a rugged metal chassis, a 9-way selector for multiple cable types including XLR, TRS, Speakons, RCA, USB, RJ45 CAT5e, and DMX, it provides quick LED feedback for each conductor. Compact and reliable, it’s the go-to tool for audio engineers and tech pros who demand precision and durability.

## Description

The OSP CT-04C Premium Cable Tester easily checks the connection and continuity of XLR mic cables, TRS instrument cables, Speaker cables, Speak on (2, 4, and 8 pole) cables, MIDI cables, 1/8" TRS (3.5mm), RJ45 CAT5e, USB, DIN, 3 Pin and 5 Pin DMX > /> >Just plug each end of your cable into the appropriate connections and turn the knob to check each pin connection. LED's confirm each conductor continuity and connection status of each wire. Works off of a standard 9V battery not included.br />span>span>br />/span>/span>/> > h3>FEATURES AND SPECIFICATIONS:/h3> /> ul> li>1/4 TRS 6.35mm Jacks/li> li>XLR (Male & Female)/li> li>RCA/li> li>MIDI/li> li>DIN/li> li>2, 4, & 8 Pole Speakons/li> li>1/8" Mini Stereo 3.5mm/li> li>USB/li> li>RJ45 CAT5e Network/li> li>DMX (3 Pin & 5 Pin)/li> li>9-Way Switch for Selecting Connections/li> li>Heavy Duty Metal Construction/li> li>9V Battery Compartment (battery not included)/li> /ul> > /> >Product Dimensions and Weight: 7-1/2" x 4" x 2" (L x W x H) (1.72 lbs.)/> > /> >Shipping Dimensions and Weight: 8-1/4" x 4-3/4" x 2-3/4" (L x W x H) (1.84 lbs.)/>

Review: worked well - Arrived as described. Worked well!
Review: Fantastic product and exceptional customer support - Accurate. Easy to use. Built like a tank. However, like others reported, the first time I fired it up the tester was intermittent due to the battery tray being loose. Rather than returning it, I emailed Elite Core. An hour later I received a reply -- from the CEO -- on a Sunday night. He replied, "Try pushing the battery sled all the way in and then push it downward while pushing inward at the same time. See if it clicks into place. We have had good luck with this technique. If it doesn’t work for you, let me know and I’ll send you another one!" I tried this simple technique AND IT WORKED. The battery sled clicked and locked into place. That is incredible customer service! I'm now an Elite Core customer for life. Highly recommended.

## Features

- 1/4 TRS 6.35mm Jacks
- XLR (Male & Female), RCA, MIDI and DIN
- RCA, MIDI and DIN connections
- 2, 4, & 8 Pole Speakons, and 1/8" Mini Stereo 3.5mm
- RJ45 CAT5e Network, DMX (3 Pin & 5 Pin)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004PDJV08 |
| Batteries | 1 9V batteries required. |
| Best Sellers Rank | #16,595 in Musical Instruments ( See Top 100 in Musical Instruments ) #665 in Microphone Cables |
| Brand | O.S.P |
| Color | Yellow |
| Color Name | Yellow |
| Compatible Devices | speaker |
| Connector Type | Rj45 |
| Customer Reviews | 4.5 4.5 out of 5 stars (160) |
| Date First Available | February 25, 2011 |
| Global Trade Identification Number | 00759681003441 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.84 pounds |
| Item dimensions L x W x H | 8 x 5 x 3 inches |
| Item model number | CT-04C |
| Manufacturer | Elite Core Audio |
| Measurement Type | Ohmmeter or Continuity Tester |
| Power Source | Battery Powered |
| Product Dimensions | 8 x 5 x 3 inches |
| Size | 7.5 x 4 x 2 inches |
| UPC | 759681003441 |

## Product Details

- **Brand:** O.S.P
- **Color:** Yellow
- **Item Weight:** 1.84 Pounds
- **Item dimensions L x W x H:** 8 x 5 x 3 inches
- **Power Source:** Battery Powered

## Images

![Elite Core OSP CT-04C Cable Tester, Speaker - Image 1](https://m.media-amazon.com/images/I/71j-7phGqvL.jpg)

## Questions & Answers

**Q: Where do i find the pdf manual for this product?**
A: This site might help you out.   Otherwise I would be OK with copying mine and emailing it to You.      https://www.youtube.com/watch?v=v44lCcWfR0g           Ray in AZ

**Q: Does the rj45 tester test the 8 wires plus the screen?  i.e. all 9 conductors in stp cables?**
A: The RJ45 connection does not test the ground. However, if you touch metal components of each RJ45 connector on the cable to the metal rings around the 1/4" testers, then the ground should tone out if it's connected.

**Q: Will this test cables with different connectors on each end? for example, a trs to xlr adapter cable with 1/4" trs on one end and xlr on the other?**
A: Yes, you can test cables with two different type connectors at the same time.

**Q: Where (in what country) is this made?**
A: The OSP CT-04C is manufactured in China.

## Customer Reviews

### ⭐⭐⭐⭐⭐ worked well
*by T***S on December 29, 2025*

Arrived as described. Worked well!

### ⭐⭐⭐⭐⭐ Fantastic product and exceptional customer support
*by S***L on August 15, 2022*

Accurate. Easy to use. Built like a tank. However, like others reported, the first time I fired it up the tester was intermittent due to the battery tray being loose. Rather than returning it, I emailed Elite Core. An hour later I received a reply -- from the CEO -- on a Sunday night. He replied, "Try pushing the battery sled all the way in and then push it downward while pushing inward at the same time. See if it clicks into place. We have had good luck with this technique. If it doesn’t work for you, let me know and I’ll send you another one!" I tried this simple technique AND IT WORKED. The battery sled clicked and locked into place. That is incredible customer service! I'm now an Elite Core customer for life. Highly recommended.

### ⭐⭐⭐⭐ A good product
*by A***Z on July 3, 2025*

Any body in the bizz should have one in there arsol. Thank you 👍 Why did you pick this product vs others?: Because am not a wirer tek.

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-11*