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AKG HC644 MD Head-Worn Cardioid Microphone

SKU: AKHC644 MFR: 2793H00100
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Key Features

  • Experience crystal-clear audio with this AKG head-worn microphone for presentations.
  • Enjoy hands-free convenience with this comfortable and lightweight headset microphone.
  • Capture pristine vocals with the cardioid polar pattern, minimizing background noise.
  • Achieve optimal sound quality with a wide 20-20000 Hz audio frequency bandwidth.
  • Benefit from a durable design, perfect for fitness instructors and active presenters.
  • Ensure seamless connectivity with the included MDA1 adapter for various devices.
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Special Order?Estimated to Ship: 09/10/2025
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AKG HC644 MD Specifications

Application

Application

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  • Sports / Fitness

    Yes

  • Assisted Listening

    Yes

  • Sound Reinforcement

    Yes

  • Presentation

    Yes

  • Retail

    Yes

Audio Output

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  • Contacts

    2-pin Microdot

Powering Interface

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  • Recommended Voltage

    9V (2V - 10V)

  • Recommended Serial Impedance

    18k Ohms (2k Ohms - 18k Ohms)

  • Headset Microphone

    Yes

General

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  • Mic Type

    Back-electret Condenser

  • Audio Frequency Bandwidth

    20 - 20000 Hz

  • Equivalent noise level

    34 dB-A

  • Sensitivity

    20 mV/Pa

  • Max. SPL for 1 % THD - 135 dB

    Yes

  • Electrical Impedance

    200 Ohms

  • Recommended Load Impedance

    2000 Ohms

  • Self Noise

    60 mW

  • Polar Pattern

    Cardioid

  • Dimensions(LxWxH)

    200 x 130 x 35mm (7.87 x 5.12 x 1.38")

  • Weight

    30g (1.06 oz)

About AKG HC644 MD

Discover the HC644 MD Head-Worn Cardioid Microphone, a product of years of experience and innovation from AKG, renowned for their best-selling head-worn microphones, the C544 and C555. This next-generation microphone is designed with the professional presenter in mind, making it an excellent choice for corporate events, educational presentations, and even high-energy sports applications like aerobics.

The HC644 MD stands out with its cardioid polar pattern, expertly picking up sound from the front while rejecting noise from the back. This makes it an ideal tool for delivering clear, focused vocals in any setting. Its microdot connector, a small, low-profile feature, ensures easy connectivity with a wide range of devices.

One of the key enhancements of the HC644 MD is its compact capsule design, which boasts higher sensitivity for superior sound capture. It also features exceptional RF shielding, providing a safe performance even in RF-sensitive environments. This makes it a reliable choice in today's world where many wireless systems operate on 2.4 GHz technology, which can cause interference with microphones.

The HC644 MD is also designed to withstand the rigors of extensive use. Its highly moisture-resistant design ensures reliable operation, even in the most demanding conditions. This durable, high-quality microphone delivers studio-quality sound with a flat frequency response for a natural sound experience.

The HC644 MD also offers a uniform polar pattern that effectively reduces feedback, ensuring your presentations are delivered with clarity and precision. With available adapters for most wireless systems, this versatile microphone is ready to fit seamlessly into your existing setup.

Whether you're a presenter in the corporate or education sector, an actor, or an aerobic trainer, the HC644 MD Head-Worn Cardioid Microphone is a reliable, professional, and versatile tool designed to elevate your audio experience.

AKG HC644 MD Features

  • High-quality HC644 MD Head-Worn Cardioid Microphone, ideal for professional presentations & vocals
  • Features a cardioid polar pattern, expertly picking up sound from the front while rejecting noise from the back
  • Equipped with a microdot connector for easy connectivity to a wide range of devices
  • Compact capsule design with higher sensitivity for superior sound capture
  • Exceptional RF shielding for safe performance in RF-sensitive environments
  • Highly moisture-resistant design, ensuring reliable operation even in demanding conditions

Warranty Information

This product has a limited warranty of 24 months.

Key Features

  • Experience crystal-clear audio with this AKG head-worn microphone for presentations.
  • Enjoy hands-free convenience with this comfortable and lightweight headset microphone.
  • Capture pristine vocals with the cardioid polar pattern, minimizing background noise.
  • Achieve optimal sound quality with a wide 20-20000 Hz audio frequency bandwidth.
  • Benefit from a durable design, perfect for fitness instructors and active presenters.
  • Ensure seamless connectivity with the included MDA1 adapter for various devices.

What's in the box:

  • AKG HC644 MD Head-Worn Cardioid Microphone
  • MDA1 AKG Adapter Connector
  • Windscreen
  • Carrying Case
  • Quick Start Guide
  • AKG 2 Year Limited Warranty