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DPA Microphones d:fine™ 4166 Flex Omnidirectional Headset and Earset Microphone

Pristine audio quality - Lightweight and flexible - Easy mounting to the left or right

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What's in the box:

  • DPA Microphone's 4166 d:fine™ Headset Microphone
  • Clothing Clip
  • ID rings and cover
  • Foam windscreen


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Legendary Sound - Flexible Headset

The d:fine™ 4166 Omnidirectional Earset Microphone combines the legendary sound of the d:fine™ 4066 Omnidirectional Capsule with a lightweight and flexible headset system. This condenser mic is easy and fast to adjust and it offers clean and transparent sound quality with lots of headroom. The capsule itself is the same type as the d:fine™ 4066, but is attached to an interchangeable boom arm.


  • Pristine audio quality
  • Lightweight and flexible
  • Minimal visual impac
  • Resistent to humidity
  • Flexible adapter system fits most professional wireless systems

Specifications for the DPA Microphones d:fine™ 4166 Flex Omnidirectional Headset

{ "Directional pattern": "Omnidirectional", "Principle of operation": "Pressure", "Cartridge type": "Pre-polarized condenser", "Frequency range": "20 Hz – 20 kHz", "Frequency range, ±2 dB": "20 Hz – 20 kHz with 3 dB soft boost at 8 – 15 kHz", "Sensitivity, nominal, ±3 dB at 1 kHz": "6 mV/Pa; –44 dB re. 1 V/Pa", "Equivalent noise level, A–weighted": "Typ. 26 dB(A) re. 20 μPa (max. 28 dB(A))", "Equivalent noise level, ITU–R BS.468–4": "Typ. 38 dB (max. 40 dB)", "S/N ratio (A–weighted), re. 1 kHz at 1 Pa (94 dB SPL)": "Typ. 68 dB(A)", "Total harmonic distortion (THD) – Legacy": "< 1% up to 123 dB SPL peak, < 1% up to 120 dB SPL RMS sine", "Total harmonic distortion (THD) – CORE": "< 1% THD up to 137 dB SPL peak", "Dynamic range – Legacy": "Typ. 97 dB", "Dynamic range – CORE": "Typ. 111 dB", "Max. SPL, peak before clipping": "144 dB", "Output impedance": "From MicroDot: 30 – 40 ω. From DAD6001-BC: 100 Ω", "Cable drive capability": "Up to 300 m (984 ft) with DAD6001–BC XLR Adapter", "Output balance principle": "Signal balanced with DAD6001–BC XLR Adapter", "Common mode rejection ratio (CMRR)": "> 60 dB from 50 Hz to 15 kHz with DAD6001–BC XLR Adapter", "Power supply (for full performance)": "Min. 5 V to max. 50 V through DPA adapter for wireless systems", "Current consumption": "Typ. 1.5 mA (microphone). 3.5 mA with DAD6001–BC XLR Adapter", "Connector": "MicroDot", "Color": "Black or beige", "Weight": "Microphone boom: 0.8 g (0.03 oz). Earhook: 1.1 g (0.04 oz). Cable: 6.6 g (0.23 oz). Total: 8.5 g (0.30 oz)", "Microphone diameter": "5.4 mm (0.21 in)", "Microphone length": "Boom length: Normal: 120 mm (4.7 in), Medium: 100 mm (3.9 in)", "Cable length": "1.3 m (4.3 ft)", "Cable color": "Black or beige", "Cable diameter": "1.6 mm (0.06 in)", "Polarity": "+V at MicroDot pin for positive sound pressure (and pin 2 on DAD6001–BC XLR adapter)", "Electromagnetic compatibility (EMC)": "Fully compatible", "Temperature range": "–40°C to 45°C (–40°F to 113°F)", "Relative humidity (RH)": "Up to 90%" }

Research Materials for DPA Microphone's 4166 Headset Microphone

We've added technical materials to help with your buying decision. Even if you're technically inclined, you may want to consider talking to our sales techs to make sure this item is the right fit for your particular use. 800.562.6006

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4166-OL-F-F00-LH User Manual

4166-OL-F-F00-LH Brochure

4166-OL-F-F00-LH Core Manual

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