24 October

Head-worn Microphone for presenters and sports

AKG by Harman Professional recently launched the AKG HC644 MD, successor to the C544 and C555 head-worn microphones. This high-performance head-worn condenser microphone is the perfect tool for presenters in the corporate market but also ideal for sport applications like aerobics with a sweat-resistant design and the ability to fit to all major wireless systems on the market.

The new HC644 MD is well protected against problems which are normally faced by other wireless systems in the low to mid-price range because mostly they are based on on 2,4 GHz technology causing nasty interference with microphones.

The main improvements of the new version are a smaller capsule design with a higher sensitivity, an exceptional RF shielding, a sweat-resistant design and the ability to fit to all major wireless systems on the market.

General Specifications

TypeBack-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


Length200 mm
Width130 mm
Height35 mm
Net Weight30 g

Audio Output

Contacts2-pin Microdot

Powering Interface

Voltage1 to 10 V
About GSL Professional
© 2017 GSL Pro Middle East ( is the official distributor of Harman Professional brands, TASCAM TEAC and DirectOut Technologies across the Middle East market including UAE, Qatar, Oman, Kuwait, Bahrain, Jordan, Iraq and Kingdom of Saudi Arabia. GSL Professional Projects & GSL Professional Entertainment provide high level technical, marketing, service and sales support across their dedicated markets including hospitality, house of worship, theme parks, transportation, education, stadia & arena, recording & broadcast, tour sound and portable PA. Split across multiple facilities in the Emirate of Dubai in the UAE, GSL Pro Middle East is proud to supply Tascam TEAC®, DirectOut Technologies, AKG® microphones & headphones, AMX® Controls, BSS Audio ® signal processing devices, Crown® amplifiers, dbx® signal processors, JBL Professional® loudspeakers, Lexicon® effects processors, Martin Lighting®, Soundcraft® and Studer® professional mixing consoles. GSL Pro Middle East also acts as local distribution partner for Klotz® cable.