AKG HC644 MD Condenser Head-Up Microphone – Professional, Consistent Performance for Presentations and Sports

AKG HC644 MD Condenser Head-Up Microphone – Professional, Consistent Performance for Presentations and Sports

• The AKG HC644 MD head microphone is a professional condenser head microphone designed specifically for lecturers, presentations, and sports and fitness applications such as aerobics. It combines a highly sensitive micro-capsule and a sweat-resistant design with advanced RF shielding to deliver consistent, clear audio even in environments crowded with wireless signals.

Technical description:

• The HC644 MDcondenser microphone utilizes a back-electret condenser capsule with a cardioid pickup pattern that focuses on the front sound and reduces ambient noise. It features exceptional RF shielding against wireless interference, particularly from 2.4GHz systems, and a sweat-resistant design ensures consistent performance during physical activity. The dual-pin Microdot connector allows compatibility with most wireless systems on the market via suitable adapters.

Technical specifications:

• Microphone type: Back-Electret Condenser Headset
• Capture pattern: Cardioid
• Frequency range: 100 – 15,000 Hz (±3 dB)
• Sensitivity: 20 mV/Pa
• Electrical impedance: 200 ohms
• Recommended load impedance: 2000 ohms
• Equivalent noise level: 34 dBA
• Signal-to-noise ratio: 60 dBA
• Maximum sound pressure: 135 dB SPL
• Temperature range: from -20° to +60°C
• Dimensions: 200 x 130 x 35 mm
• Net weight: 30 grams (with cable)
• Output type: Bi-pin Microdot
• Operating voltage: 9 volts (2-10 volts)
• Current consumption: ≤ 500 μA

Key features:

• small, highly sensitive capsule
• Strong RF protection against 2.4GHz interference
• Sweat and moisture resistant design
• Cardioid pattern reduces ambient noise
• Broad compatibility with wireless systems via adapters
• Lightweight for long-lasting comfort

Product summary:

• The AKG HC644 MD head microphone provides consistent clarity and advanced wireless interference protection with a sweat-resistant design, making it a practical choice for lecturers and trainers.

Additional features:

• MDA1 adapter for multi-system compatibility
• Windscreen to reduce wind noise
• Carrying bag for protection and transport
• Quick and easy installation

Applications used for the product:

• Presentations and conferences: Clear and stable sound
• Sports and fitness: Reliable performance during intense activity
• Retail and stores: Clear communication with customers
• Sound enhancement systems: stability in auditoriums

Summary and final advice:

• If you are looking for Combining high clarity, wireless interference protection, and a sweat-resistant design, the AKG HC644 MD is a reliable choice for professional use in active, signal-congested environments.

Detailed product data (Data Sheet).