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Audio-Technica ATM350S - Cardioid Condenser Instrument Microphone with Surface Mounting System (5" Gooseneck)

Availability: Pre-order now. ETA March 2019

Pre-Order $299.00
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Pre-Order $299.00
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- Cardioid condenser instrument microphone with surface mounting system
- 5" gooseneck ideal for recording accordion instruments 
- ATM50a, cardioid condenser microphone with a clear, well-balanced response
- Reduce side and rear pickup with the polar pattern, unique of the Cardioid system


Designed for use with accordions and other instruments that are difficult to mike, the ATM350S UniMount mounting system gives you the tools to perform with confidence. The system features the ATM350a cardioid condenser microphone, a high-SPL mic that provides a clear, well-balanced response from any instrument. When teamed with the included AT8491S surface mount and strong, flexible AT8490 5" gooseneck, the mic can be securely fastened to an accordion or other instrument with a challenging mounting surface and be positioned where you want it – the mic will stay in place no matter how much you move the instrument as you play. The microphone’s cardioid polar pattern isolates the instrument by reducing side and rear pickup, and the switchable 80 Hz high-pass filter on the in-line power module helps control undesired low-frequency noise. The system also includes an AT8468 violin mount with hook-and-loop fastener and a protective carrying case

Key features:

  • Low-profile mic design for minimum visibility
  • Crisp, clear, well-balanced microphone response, even at high SPLs
  • Cardioid polar pattern reduces pickup of sounds from the sides and rear, improving isolation of desired sound source
  • UniMount surface mount attaches permanently or temporarily to an accordion or other instrument that is difficult to mike, providing excellent shock resistance for the microphone
  • Rugged UniMount 5" gooseneck rigidly holds its shape, keeping microphone accurately positioned even during aggressive play
  • In-line power module is equipped with a switchable 80 Hz high-pass filter to control undesired ambient noise
  • Interchangeable elements available for hypercardioid and omnidirectional polar patterns
  • Included violin mount with hook-and-loop fastener provides an additional mounting option


Fixed-charge back plate permanently polarized condenser 

Polar Pattern


Frequency Response

40-20,000 Hz 

Low Frequency Roll-Off

80 Hz, 12 dB/octave 

Open Circuit Sensitivity

–49 dB (3.5 mV) re 1V at 1 Pa 


200 ohms 

Maximum Input Sound Level

159 dB SPL, 1 kHz at 1% T.H.D. 

Dynamic Range (typical)

130 dB, 1 kHz at Max SPL 

Signal-To-Noise Ratio

65 dB, 1 kHz at 1 Pa 

Phantom Power Requirements

11-52V DC, 3.5 mA typical 


Flat, roll-off 

Weight (Microphone)

14.5 g (0.5 oz) 

Weight (Power Module)

90 g (3.2 oz) 

Dimensions (Microphone)

37.8 mm (1.49") long, 12.2 mm (0.48") diameter 

Dimensions (Power Module)

92 mm (3.62") long, 18.9 mm (0.74") diameter 

Output Connector (Power Module)

Integral 3-pin XLRM-type 


4.0 m (13.1') long (permanently attached to microphone), 3.2 mm (0.13") diameter, 2-conductor shielded cable with TA3F-type connector 

Optional interchangeable elements

UE-H hypercardioid (100°)
UE-O omnidirectional (360°)

Audio-Technica Case Style


what's included
  • Audio Technica ATM350a
  • AT8543 power module
  • Audio Technica AT8491S
  • AT8475 Surface Mounting Kit
  • Audio Technica AT8490 5" gooseneck
  • AT8468 violin mount (hook-and-loop fastener)
  • Protective carrying case
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