SUB-MINIATURE ELECTRET MICROPHONES

Our sub-miniature microphones are engineered for precision, reliability, and low power consumption, making them ideal for medical devices, instrumentation, surveillance, and audio applications where performance matters.

Looking for high-performance sub-miniature microphones? Compare the key specifications and features of our 151 Series, 251 Series, and 351 Series microphones to find the perfect solution for your application.

🧩 Best Applications

  • 151 Series: Ideal for compact and EMI-sensitive designs where ultra-small size matters.

  • 251 Series: Versatile choice for applications needing multiple frequency and port configurations.

  • 351 Series: Best for ultra-low noise and directional sound capture in precision environments.

Custom assembly available with cable, connectors, and preamplifiers.

Technical Data Sheets

AUDIO & POWER CONNECTORS

Tibbetts Telocate connectors are engineered for durability, performance, and easy integration with surveillance audio systems.
Choose from our range of compact, robust connectors designed to pair seamlessly with Tibbetts preamplifiers and monitoring equipment. We offer three models of 4-pin inline connectors, available for individual purchase or pre-assembled with our microphones. Custom assemblies with third-party connectors, such as stereo plugs, are also available upon request.

JT4FP Female Cable-End Solder Cup Connector

Reliable 4-pin female connector for custom cable assemblies

  • Contact Termination: Solder cup

  • Overall Diameter: 0.84" (21.3 mm)

  • Pin Spacing: Standard 0.125" (3.05 mm)

  • Design: Mates with JT4MCS and JT4MB for full-system connectivity

  • Use Case: Surveillance mic systems, audio installations, panel extensions

JT4MC – Male Cable-End Solder Cup Connector

Durable 4-pin male connector with solder cup terminals

  • Contact Termination: Solder cup

  • Overall Diameter: 0.83" (21 mm)

  • Pin Spacing: Standard 0.125" (3.05 mm)

  • Design: Rugged body for secure cable connection

  • Use Case: Field wiring and custom cable builds

JT4MB – Panel Mount 4-Pin Power Connector

Compact panel connector for power and signal transmission

  • Mounting: 1/4"-28 threaded barrel

  • Electrical Pins:

    • Pin 1: Not connected (NC)

    • Pin 2: VCC (Power input)

    • Pin 3: Signal (Audio/Line)

    • Pin 4: Ground (GND)

  • Cutout Size: 0.360" max diameter

  • Application: Panel interface for power and audio signal lines

  • Ideal For: Use with inline microphone preamplifiers and integrated surveillance devices

Why Tibbetts Telocate Connectors?

  • Precision-machined for signal reliability

  • Trusted in surveillance and OEM mic installations

  • Seamless integration with Tibbetts preamplifiers

  • Built to withstand field use and repeated mating cycles

HIGH-PERFORMANCE PREAMPLIFIERS

Designed and manufactured in the USA by Tibbetts Industries

Boost your audio clarity with Tibbetts’ precision-engineered preamplifiers. Built in the USA and designed for surveillance, installation, and monitoring applications. Discover our complete line of professional-grade microphone preamplifiers engineered for precision audio capture. Whether you need stereo, mono, adjustable, or multi-channel preamps, Tibbetts delivers rugged and reliable audio amplification solutions.

MSP 2. .0 Stereo Microphone Preamplifier

Fixed-Gain Inline Preamp for Surveillance Microphones

  • Channels: 2 (Stereo)

  • Gain Control: 4-step fixed (40–58 dB)

  • Connectors: Dual RCA output

  • Key Features: Built-in soft limiter (max 0.5Vrms), Telocate connector, DC jack power input

  • Power Supply: +5 to 12 VDC | < 2.0 mA

  • Ideal For: Line-level signal boosting from mic-level audio in recording and monitoring systems

MSP 2. .1 Stereo Microphone Preamplifier

Balanced Output Preamplifier with High-Voltage Protection

  • Channels: 2 (Stereo)

  • Gain Control: 4-step fixed (40–58 dB)

  • Output Type: Transformer-coupled screw terminal (600Ω balanced)

  • Input Protection: Ring detection (up to ~65VDC)

  • Power Options: +5 to 12 VDC (jack), +5 to 80 VDC (terminal)

  • Best Use Case: Environments with telephone line voltages or where balanced audio signals are required

MSP 2A Adjustable Gain Stereo Preamplifier

Adjustable Gain Preamplifier for Flexible Installations

  • Channels: 2 (Stereo)

  • Gain Range: Fully adjustable from 0 to 62 dB

  • Power Supply: +5 to 12 VDC | < 2.0 mA

  • Microphone Bias: 4.8 VDC

  • Best For: Professional installers needing adaptable audio levels for custom mic setups

MSP 4A Adjustable 4-Channel Preamplifier

High-Capacity Audio Preamplifier for Multi-Mic Systems

  • Channels: 4

  • Gain Range: Adjustable (0–62 dB)

  • Power Supply: +5 to 12 VDC | < 3.0 mA

  • Use Case: Large-scale audio monitoring setups requiring multiple stereo microphone inputs

PPA 1.1 Pocket Microphone Preamplifier

Portable Preamp for Mic Setup & Testing

  • Channels: 2 (Stereo)

  • Gain Control: 4-step adjustable (40–58 dB) with LED limiter indicator

  • Output: 3.5 mm stereo headphone jack

  • Power: 9V battery with auto shut-off

  • Purpose: Field-testing and gain-setting tool for surveillance mic installations

SCP 2 .2 Mono Microphone Preamplifier

Mono Line-Level Amplifier with Transformer Isolation

  • Channels: 1 (Mono)

  • Gain Control: 4-step fixed (40–58 dB)

  • Output: Transformer-coupled 600Ω terminal block

  • Protection: Up to 80 VDC power input and ring detection

  • Application: Secure single-microphone setups needing balanced output and high-voltage tolerance

Battery Tubes

Portable Battery Tubes built to power our preamplifiers.

✅ Why Choose Tibbetts Preamplifiers?

  • American-made audio electronics

  • Engineered for professional surveillance and broadcast-quality sound

  • Compatible with Telocate and MicroTech connectors

  • Industry-standard specifications for frequency response, impedance, and noise performance