What industries does Clockaudio serve?

Clockaudio solutions are used across corporate offices, education, government, healthcare, broadcast, and commercial AV environments where reliable, high-quality audio is essential.

Are Clockaudio products compatible with major conferencing platforms?

Yes — Clockaudio microphones and audio systems integrate seamlessly with major unified communications platforms including Microsoft Teams Rooms, Zoom Rooms, Cisco Webex, and Google Meet. Our boundary, gooseneck, and ceiling microphones deliver the clarity and reliability required for professional video conferencing installations worldwide.

Do you offer support for system design and installation?

Yes. Our engineering team provides system design consultations for integrators and end-users, helping specify the right combination of microphones, processors, and accessories for your space. Our technical support team is available throughout the installation and commissioning process.

Where are Clockaudio products manufactured?

Clockaudio has been designing and manufacturing professional audio products in the United Kingdom for over 40 years. Our UK facility handles R&D, precision assembly, and quality control — ensuring every product meets the standards expected by AV professionals worldwide.

How can I choose the right microphone for my space?

The right microphone depends on your room size, acoustic environment, and application. Boundary microphones suit tabletop conferencing; goosenecks are ideal for fixed lectern or dais positions; ceiling-mounted mics offer clean aesthetics for modern meeting rooms. Contact our team or use our Search Facility to find a certified integrator near you for a tailored recommendation.

LL-25

Line Level Pre-amp

QUICK SPECS

Type

Line Level Pre-Amp

Frequency Response

50Hz – 20KHz

Sensitivity

5mV/Pa (-46dBV/Pa)

Power Requirements

12Vdc

Specifically designed for use with electret condenser Microphones for connection to line level input sources commonly used on CCTV / Video cameras and other multimedia appliances.
Construction is made from strong and lightweight ABS.
Input and output connections are via plug in screw terminal blocks. Trimmer pot to adjust microphone gains by + 20dB
Typical frequency response 50 – 20KHz, impedance 225 Ohms balanced output, open circuit sensitivity 5mV/Pa (-46dBV/Pa), S/N 68dB @ 94dBspl, operating Voltage 12VDC

Engineered for Perfect Speech Capture

Line level Pre-Amp.

Specifically designed for use with electret condenser Microphones for connection to line level input sources commonly used on CCTV / Video cameras and other multimedia appliances.
Construction is made from strong and lightweight ABS.
Input and output connections are via plug in screw terminal blocks. Trimmer pot to adjust microphone gains by + 20dB
Typical frequency response 50 – 20KHz, impedance 225 Ohms balanced output, open circuit sensitivity 5mV/Pa (-46dBV/Pa), S/N 68dB @ 94dBspl, operating Voltage 12VDC
Current drain 400uA, operating temperature -10C to +60C.
Power requirements: 12Vdc
Finish: Satin Black.”

For ‘Glossary of Terms’Click Here

Specifically designed for use with electret condenser Microphones for connection to line level input sources commonly used on CCTV / Video cameras and other multimedia appliances.

Construction is made from strong and lightweight ABS.

Input and output connections are via plug in screw terminal blocks. Trimmer pot to adjust microphone gains by + 20dB

Typical frequency response 50: 20KHz, impedance 225 Ohms balanced output, open circuit sensitivity 5mV/Pa (-46dBV/Pa), S/N 68dB @ 94dBspl, operating Voltage 12VDC

Technical Specifications

Length

25mm (1.0")

Application

Designed for use with electret condenser microphones that can subsequently be used to connect to line level input sources commonly available on devices such as CCTV, PVR and other multimedia recorders.

Type

Line Level Pre-Amp

Frequency Response

50Hz – 20KHz

Sensitivity

5mV/Pa (-46dBV/Pa)

Gain Adjustment

+20dB via adjustable trimmer

S/N Ratio

68dB (A)

Power Requirements

12Vdc

Operating Temperature

-10C to +60C

Termination

Plug in Terminal Blocks

Finish

Black

Dimensions

D 19.75mm(0.78in) W 35mm (1.38in) L 60mm (2.36in)

Architect & Engineer Specifications

LL-25 is specifically designed for use with electret condenser microphones that can subsequently be used to connect to line level input sources commonly available on devices such as CCTV, PVR and other multimedia recorders. Construction is from very strong and lightweight ABS. Input and output connections are via plug in screw terminals. Typical frequency response 50 – 20KHz, impedance 225 Ohms balanced output, open circuit sensitivity 5mV/Pa (-46dBV/Pa), S/N 68dB @ 94dBspl, operating Voltage 12VDV. Current drain 400uA, Maximum +20dB Gain adjustment, operating temperature -10C to +60C. Power requirements: 24V / 12Vdc. Size: D19.75 X W35 X 60mm. Finish: Satin Black.

Key Features

Specifically designed for use with electret condenser Microphones for connection to line level input sources commonly used on CCTV / Video cameras and other multimedia appliances.

Construction is made from strong and lightweight ABS.

Input and output connections are via plug in screw terminal blocks. Trimmer pot to adjust microphone gains by + 20dB

Typical frequency response 50: 20KHz, impedance 225 Ohms balanced output, open circuit sensitivity 5mV/Pa (-46dBV/Pa), S/N 68dB @ 94dBspl, operating Voltage 12VDC

Current drain 400uA, operating temperature -10C to +60C.

Downloads & Documentation

Frequently asked questions

Where can I find the full technical documentation?

Use the Data sheet button on this page for the full specification PDF, and check the Downloads tab for manuals and other documents.

What finish options are available?

Available finish: Black

IDEAL FOR

Application Areas

Broadcast & Studios

Professional-grade audio for broadcast, recording, and production environments.

Corporate AV

Professional audio solutions for corporate environments and facilities.

Healthcare Facilities

Clear communication for medical consultations and patient interactions.

Not Sure if the LL-25 Is Right for You?

Our audio engineers can help you specify the perfect microphone for your installation. Get in touch for expert guidance.

LL-25

QUICK SPECS

Engineered for Perfect Speech Capture

Specifically designed for use with electret condenser Microphones for connection to line level input sources commonly used on CCTV / Video cameras and other multimedia appliances.

Construction is made from strong and lightweight ABS.

Input and output connections are via plug in screw terminal blocks. Trimmer pot to adjust microphone gains by + 20dB

Typical frequency response 50: 20KHz, impedance 225 Ohms balanced output, open circuit sensitivity 5mV/Pa (-46dBV/Pa), S/N 68dB @ 94dBspl, operating Voltage 12VDC