AC Audio Online Music Shop, PA, Pro Audio & Live Sound Specialists

A.C. Audio: Online PA, Pro Audio and Live Sound Specialists Call us on 0113 386 9080 Send us an email: Home

Audio-Technica U841A Boundary Microphone

Product Code: AUU841A
Manufacturer: Audio-Technica

Free mainland UK shipping available for this product

Our Price £245.18INC

Available within 2-5 working days

Audio-Technica Authorised Reseller Europe

The U841A delivers exceptionally intelligible audio reproduction in a super-compact, low-profile design. Equipped with UniGuard® RFI-shielding technology, this omnidirectional condenser boundary microphone is designed for clear, highly intelligible sound reinforcement, professional recording, television and conferencing in surface-mount applications. The U841A has a 360° pickup angle and operates on battery or phantom power.


Designed for surface-mount applications such as high-quality sound reinforcement, professional recording, television, conferencing and other demanding sound pickup situations

UniGuard® RFI-shielding technology offers outstanding rejection of radio frequency interference (RFI)

UniSteep® filter provides a steep low-frequency attenuation to improve sound pickup without affecting voice quality

Small-diameter UniPoint® capsule near boundary eliminates phase distortion and delivers clear, high-output performance

Heavy die-cast case and silicon foam bottom pad minimize coupling of surface vibration to the microphone

Low-profile design with low-reflectance black finish for minimum visibility

Operates on battery or phantom power

Element: Fixed-charge back plate permanently polarized condenser

Polar Pattern: Omnidirectional in hemisphere above mounting surface

Frequency Response: 30-20,000 Hz

Low Frequency Roll Off: 80 Hz, 18 dB/octave

Open Circuit Sensitivity: Phantom: -39 dB (11.2 mV) re 1V at 1 Pa Battery: -40 dB (10.0 mV) re 1V at 1 Pa

Impedance: Phantom: 200 ohms Battery: 270 ohms

Maximum Input Sound Level: Phantom: 132 dB, 1 kHz at 1% T.H.D. Battery: 122 dB SPL, 1 kHz at 1% T.H.D.

Dynamic Range: Phantom: 111 dB, 1 kHz at Max SPL Battery: 101 dB, 1 kHz at Max SPL

Signal to Noise Ratio: 73 dB, 1 kHz at 1 Pa

Phantom Power Requiremens: 11-52V DC, 2 mA typical

Battery Type: 1.5V AA/UM3

Battery Current Life: 0.4 mA / 1200 hours typical (alkaline)

Switch: Off, on-flat, on-roll-off

Cable: 25.0' (7.6 m) long (permanently attached to microphone), 0.13" (3.2 mm) diameter, 2-conductor, shielded cable with TA3F-type connector

Accessories: AT8531 power module; battery; soft protective pouch

  • UK Based Company
  • Part of A.C. Entertainment Technologies - has its trading origins over 45 years ago
  • UK Stock Holding
  • UK Warranty
  • Free Delivery Over ?150
  • Great Prices
  • Over 20 Years' Experience
  • Specialist Advice
  • Fast Delivery
  • Finance Options Available

With years of experience supplying Businesses, Government Organisations, Charities, Schools, Colleges and Universities, we invite you to take advantage of our knowledge to help you make an informed choice, ensuring you are purchasing the best music products for your needs. With specialists in PA Systems, Pro Audio & Live Sound equipment on hand to answer calls and emails, you're in the best possible hands.

Contact us now to discuss your requirements or to request a quotation. Additional discounts may apply for educational establishments or size and value of order.

Purchase orders can be sent directly to or apply for your cash or credit account here. Terms and conditions will apply.

Share This Page

Seen it cheaper?