---
product_id: 1971537
title: "VEC TRX-20 3.5MM Direct Connect Telephone Record Device (ADAPTER ONLY)"
brand: "vec"
price: "E£ 5771"
currency: EGP
in_stock: false
reviews_count: 12
url: https://www.desertcart.com.eg/products/1971537-vec-trx-20-3-5mm-direct-connect-telephone-record-device
store_origin: EG
region: Egypt
---

# 3.5mm mic input jack Supports single & multi-line phones Modular handset cord connector VEC TRX-20 3.5MM Direct Connect Telephone Record Device (ADAPTER ONLY)

**Brand:** vec
**Price:** E£ 5771
**Availability:** ❌ Out of Stock

## Summary

> 📞 Capture Every Word Like a Pro — Don’t Miss a Beat!

## Quick Answers

- **What is this?** VEC TRX-20 3.5MM Direct Connect Telephone Record Device (ADAPTER ONLY) by vec
- **How much does it cost?** E£ 5771 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/1971537-vec-trx-20-3-5mm-direct-connect-telephone-record-device)

## Best For

- vec enthusiasts

## Why This Product

- Trusted vec brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Simplicity:** No technical hassle—installs effortlessly between handset and phone.
- • **Compact & Durable Design:** Lightweight 1.76 oz adapter built to withstand daily handset cord movement.
- • **Pro-Grade Recording Ready:** Optimized for use with external recorders and preamps for studio-quality sound.
- • **Crystal Clear Audio Capture:** Direct handset connection ensures pristine call recordings with minimal noise.
- • **Universal Multi-Line Compatibility:** Seamlessly records any active line on multi-line phone systems.

## Overview

The VEC TRX-20 3.5MM Direct Connect Telephone Record Device is a compact adapter that plugs between your telephone handset and phone, enabling crystal-clear audio recording through a 3.5mm mic input. Compatible with single and multi-line phones (excluding cordless), it offers easy installation and reliable durability, making it an essential tool for professionals who demand high-quality call recordings. Note: recorder and phone not included.

## Description

TRX-20-35B Telephone Recording Jack (3.5mm) TRX20 These WILL NOT WORK with CORDLESS PHONES. The TRX-20-35B Telephone Record Unit (specifically for 3.5mm mic inputs) adapts a recorder to both single or multi-line telephones. Simple and easy to use, this unit connects quickly between your telephone and handset providing crystal clear audio recordings. (The audio quality will be as good as the audio coming through your handset!). A modular connector simply plugs between handset cord and the telephone, and 3.5mm jack plugs into your recorder. When used with a multi-line phone, it will record whichever line you are talking on. 3.5mm microphone input plug on the tape recorder or digital recorder. PLEASE CHECK IF YOUR PHONE SYSTEM IS COMPATIBLE-WITH THIS ADAPTER SOME PHONES ARE NOT COMPATIBLE RECORDING DEVICE IS NEEDED FOR THIS ADAPTER TO WORK RECORDER & PHONE NOT INCLUDED

Review: So far, High SNR Value and Easy to Install! Seemingly works great! - So far, great sound quality or has a seemingly high signal to noise ratio. Also, very easy to install and versatile. Two misconceptions, this VEC TRX-20 device does include the spiral cord and the 3.5mm or 1/8 mini jack. The device also connects to the headset rather than at the telephone jack. (Far better on the handset, for maintaining audio quality.) My setup, I plug the output or the 3.5 or 1/8 mini-jack of the VEC TRX-20 into a pre-amplifier, then from the pre-amp into the line-in of an Asus Xonar Essence STX PCI/PCIe computer card. (The ASUS STX cards are one of the best sounding or highest signal to noise ratio sound cards on the market.) Trying to connect this device directly to a computer sound card without using a pre-amplifier may require enabling "mic boost" through the computer operating soundcard frontend settings, and greatly degrading the sound quality or signal to noise ratio depending on the quality of sound card used. I would strongly suggest using a (microphone) preamplifier, costing another $50-100 and can be readily bought through most music stores. The better pre-amplifiers tend to use XLR micrphone connectors, include +20dB mic boost for which I find essential, as well as 1/4 inch jacks rather than the small 1/8 jacks. My equipment: 1) This device, VEC TRX-20 2) Studio V3 Tube MP Pre-amplifier (Settings: w/o +48v turned on, and +20dB Gain and Phase Reverse enabled) 3) Asus Xonar Essence STX PCI/PCIe sound card 4) Software: Linux ALSA arecord, aplay and alsamixer for recording 32 bit 48000hz PCM WAV files. (Photo shows only 16 bit rather than 32 bit recording due to an error on my part!)
Review: Decent telephone recorder. Inexpensive, effective. - This recorder adapter intercepts the handset input/output for a mono recording. Very easy to use. The only limitation is the quality of the telephone line and the telephone itself. However, for two years, we did not disconnect the adapter unit. The telephone handset coil cord jerked the unit wires hundreds of times, the wires separated and static crackled. So we bought two more.

## Features

- Please check if your phone system is compatible-with this adapter some phones are not compatible recording device is needed for this adapter to work recorder & phone not included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000KL0XA6 |
| Best Sellers Rank | #557 in Telephone Wires |
| Customer Reviews | 4.2 4.2 out of 5 stars (709) |
| Date First Available | July 24, 2006 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.76 ounces |
| Item model number | TRX20 3.5M |
| Manufacturer | KJB Security |
| Product Dimensions | 2.3 x 1.6 x 3.6 inches |

## Product Details

- **Answering System Type:** Digital
- **Brand:** VEC
- **Color:** Black
- **Compatible Devices:** Modular telephones
- **Dialer Type:** Single Keypad
- **Item Weight:** 1.76 ounces
- **Item dimensions L x W x H:** 2.3 x 1.6 x 3.6 inches
- **Material:** Plastic
- **Power Source:** Corded Electric
- **Telephone Type:** Corded

## Images

![VEC TRX-20 3.5MM Direct Connect Telephone Record Device (ADAPTER ONLY) - Image 1](https://m.media-amazon.com/images/I/51+21qu4UxL.jpg)

## Questions & Answers

**Q: Will this work with a cordless telephone and a headset attached to the telephone?**
A: Hi, I've had a hard time finding a useful headset that will work with the phone and the device at the same time. Every product that I have used has not worked.

**Q: will this work with a nortel phone? it says "please check if your phone system is compatible-with this adapter" but it doesn't list compatible systems**
A: Not sure. We use it on Cisco phone system. Don't know why it wouldn't since it just plugs into regular headset cord.

**Q: I have a Olympus VN-702PC Voice Recorder and a land line phone. Is this the only other piece of equipment I will need to record calls?**
A: Hello, Yes, I suggest you ensure you have a  voice recorder with noice canceling capability.  I used a recorder without that feature and the quality of recording was very difficult.  I highly recommend this little device. Good Luck!

**Q: Does not record**
A: I'm not sure if this is a question or a statement. This item does not, in fact, record.  It must be plugged into the mic port of a recording device.  Hope this helped.

## Customer Reviews

### ⭐⭐⭐⭐⭐ So far, High SNR Value and Easy to Install! Seemingly works great!
*by R***R on April 18, 2019*

So far, great sound quality or has a seemingly high signal to noise ratio. Also, very easy to install and versatile. Two misconceptions, this VEC TRX-20 device does include the spiral cord and the 3.5mm or 1/8 mini jack. The device also connects to the headset rather than at the telephone jack. (Far better on the handset, for maintaining audio quality.) My setup, I plug the output or the 3.5 or 1/8 mini-jack of the VEC TRX-20 into a pre-amplifier, then from the pre-amp into the line-in of an Asus Xonar Essence STX PCI/PCIe computer card. (The ASUS STX cards are one of the best sounding or highest signal to noise ratio sound cards on the market.) Trying to connect this device directly to a computer sound card without using a pre-amplifier may require enabling "mic boost" through the computer operating soundcard frontend settings, and greatly degrading the sound quality or signal to noise ratio depending on the quality of sound card used. I would strongly suggest using a (microphone) preamplifier, costing another $50-100 and can be readily bought through most music stores. The better pre-amplifiers tend to use XLR micrphone connectors, include +20dB mic boost for which I find essential, as well as 1/4 inch jacks rather than the small 1/8 jacks. My equipment: 1) This device, VEC TRX-20 2) Studio V3 Tube MP Pre-amplifier (Settings: w/o +48v turned on, and +20dB Gain and Phase Reverse enabled) 3) Asus Xonar Essence STX PCI/PCIe sound card 4) Software: Linux ALSA arecord, aplay and alsamixer for recording 32 bit 48000hz PCM WAV files. (Photo shows only 16 bit rather than 32 bit recording due to an error on my part!)

### ⭐⭐⭐⭐⭐ Decent telephone recorder. Inexpensive, effective.
*by V***S on August 20, 2024*

This recorder adapter intercepts the handset input/output for a mono recording. Very easy to use. The only limitation is the quality of the telephone line and the telephone itself. However, for two years, we did not disconnect the adapter unit. The telephone handset coil cord jerked the unit wires hundreds of times, the wires separated and static crackled. So we bought two more.

### ⭐⭐⭐⭐ Works fine, but with the Olympus WS-822 digital voice recorder, seems to only play on the right headphone.
*by C***. on October 30, 2015*

This is a piece of equipment that is specifically designed to connect your landline phone to a digital voice recorder. You plug it into the phone and into the digital voice recorder mic jack. This is my second purchase of this model. The first one lasted for years, and I believe it still works fine. I think I was having problems with my digital voice recorder, not the adapter, but I ordered a new one of both just in case. The problem is that with my old digital voice recorder, the Olympus DS-30, I think I remember that it recorded in stereo - or at least in such a way that the sound came out of both sides of my headphones. With the new digital voice recorder, the Olympus WS-822, the recorded conversations only come out of the right side of my headphones. If anybody knows what I am doing wrong, please let me know. Until then I am not completely happy, but the device does do its job.

## Frequently Bought Together

- VEC TRX-20 3.5MM Direct Connect Telephone Record Device (ADAPTER ONLY)
- Sony ICD-PX470 Stereo Digital Voice Recorder with Built-in USB Voice Recorder

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-02-01*