Shure RK100PK In-Line Preamplifier for Microflex Microphones

Enhanced Audio Clarity with RFI Resistance

The Shure RK100PK In-Line Preamplifier is designed to enhance the performance of Shure Microflex® (MX Series) microphones, delivering clean, reliable audio for professional applications across Australia. This compact preamplifier boosts resistance to Radio Frequency Interference (RFI) caused by nearby transmitters, powerful two-way radios, or grounding issues, making it ideal for conferencing, presentations, and AV installations in RF-heavy environments. Compatible with Microflex microphones featuring a TA4F connector, it converts 48V phantom power to the 5V required for electret condenser circuitry.

Reliable Performance for Microflex Microphones

The RK100PK provides a seamless wired connection for Shure Microflex microphones, such as the MX150, MX153, MX183, MX184, MX185, WL183, WL184, and WL185, ensuring low noise levels and high signal integrity. It features a TA4M input connector for Microflex microphones and a standard 3-pin XLR output for connection to mixers or audio interfaces. The preamplifier requires an external 11–52V DC phantom power source to operate, as it does not provide power to the microphone independently. While Shure notes potential compatibility limitations with some models like the WL185, user feedback confirms successful operation in professional settings, such as live discussions in RF-challenged environments.

Compact and Durable Design

Built with Shure’s renowned quality, the RK100PK features a robust, compact black housing that integrates seamlessly into professional audio setups. Its simple, in-line design ensures easy installation without adding bulk, making it suitable for both permanent installations and portable applications. The preamplifier does not offer user-adjustable gain control, maintaining a fixed gain structure optimized for Microflex microphones. Its RFI-resistant properties make it a reliable choice for environments with high electromagnetic interference, ensuring consistent audio performance.

Key Performance Features

• RFI Resistance – Rejects radio frequency interference from transmitters and grounding issues

• Microflex Compatibility – Works with MX150, MX153, MX183, MX184, MX185, WL183, WL184, WL185, and other TA4F-equipped Microflex mics

• TA4M to XLR Connectivity – Converts TA4F microphone output to standard 3-pin XLR for professional systems

• Phantom Power Requirement – Operates with 11–52V DC phantom power (microphone power not included)

• Low Noise Performance – Delivers clean audio with minimal self-noise

• Compact and Durable – Robust black housing for reliable, unobtrusive integration

• Professional Applications – Ideal for conferencing, presentations, and AV installations

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