Universal Telephone Recording Lead

The universal telephone recording lead is a neat little product that allows you to discreetly record telephone calls made on both mobile and landline phones, transforming any standard phone call into a documented listening device session.

Use With Separate Audio Recorder

Simply insert the microphone jack plug into a suitable recording unit, place the earbud into your ear, and hold your mobile or landline receiver up to that same ear.

You will still be able to hear the caller perfectly, but pressing record on your connected device captures both sides of the conversation in real time.

The universal telephone recording lead gives you full control over when to start and stop logging call audio without relying on complex mobile apps.

Discreet Call Recording Operation

Using this specialised recording and listening accessory gives no visual or acoustic indication to the person on the line that the call is being recorded.

Because it operates as an acoustic pickup earpiece, the universal telephone recording lead is compatible with any handset format, including mobile phones, office desk phones, and payphones.

Its ultra-compact, lightweight design makes it easy to keep in a pocket or bag, ready for immediate deployment whenever you need to protect your interests.

Pair With a Compatible Voice Recorder

No specialist software or proprietary recorder is required to operate the lead, provided your recording device features an external microphone input socket.

If you do not already own a portable recorder, you can pair this accessory with options from our voice recording devices section.

Provided you deploy the device for lawful purposes, the situations that suit using a voice recording device for telephone recording are extensive.

If you need assistance selecting the correct connector size for your universal telephone recording lead, please contact our expert team today.

How do I know if my existing recorder is compatible with the universal telephone recording lead?

The lead will work with any recorder that features a dedicated external microphone socket. Simply select the jack plug connector size (3.5mm or 2.5mm) that matches your recording unit.

Will the person on the phone know that I am using the universal telephone recording lead?

No. The lead operates acoustically via an in-ear microphone inside your ear, meaning no beep sounds, clicks, or signal interruptions are transmitted across the telephone line.

Can I use this universal telephone recording lead with an iPhone or Android smartphone?

Yes. Place the earbud in your ear, hold your smartphone up to that ear normally, and connect the jack plug into your portable voice recorder to capture the conversation.

Does the lead require batteries to operate?

No. The lead is a passive microphone accessory that draws minimal power directly from the external recorder’s microphone input.

Can I still hear the caller clearly while using this earpiece microphone?

Yes. The earbud is designed to pass incoming phone audio directly to your ear canal while its outer microphone element captures the sound for your recorder.

You will need to consider the following to use this product:

• This device needs to be attached to a voice recorder to operate call recording functionality. Use your existing recorder or choose from our voice recorders section.
• Please select the correct microphone jack plug size relevant to the recorder that you intend to use this product with. If you also purchase one of our recorders, then you will need to select 3.5 stereo as the plug option.

• Universal earpiece microphone records calls across all handset formats, including mobile phones, landlines, and cordless handsets.
• In-ear acoustic pickup capsule captures both local speech and incoming caller audio simultaneously with high clarity.
• Connects directly into the external microphone port of standard digital voice recorders and dictaphones.
• Passive acoustic operation produces zero line noise, beep tones, or indication to the caller that recording is underway.
• Available with custom jack plug configurations to suit various voice recorder inputs.
• Compact and pocket-sized design allows instant field deployment without requiring computer software or app setup.
• Allows normal caller listening through the earbud while simultaneously capturing two-way call evidence.
• Ideal covert solution for logging nuisance calls, securing business verbal agreements, or protecting personal interests.

• Device Type: External Telephone In-Ear Microphone Lead
• Microphone Type: High-sensitivity omnidirectional acoustic condenser capsule
• Compatibility: Any mobile phone, landline receiver, cordless telephone, or payphone
• Connection Output: Standard 3.5mm Stereo, 3.5mm Mono, or 2.5mm Jack Plug (selectable)
• Power Source: Passive (Powered directly via connected voice recorder microphone port)
• Internal Memory: None (Requires external recording device)
• Battery Requirement: None
• Cable Length: Approx. 1 metre flexible cable
• Weight: Approx. 12 grams

• Universal Telephone Recording Lead (with selected jack plug connector)
• User Guide