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Avenson Audio STO-2 Small Diaphragm Condenser Mic - Pair

Matched pair of small diaphram omni directional microphones

Product Description

These exceptionally accurate Omni directional microphones are perfect for capturing instruments that need no flattery, and room sounds that bring the listener very close to feeling like they're actually in the room with the instrument(s).  The STO-2 are only sold in matched pairs so stereo is no problem.  Whether you employ a Jecklin disk or spaced pair - it will sound like you are there.


The STO-2 is a pressure transducer. So are your ears.  No coincidence. Avenson started out looking for a natural sounding mic and this is what they came up with.

Sold in matched pairs, (two ears right?) the STO-2's are perfect for capturing instruments that need no flattery.  With a matched pair, stereo is no problem - Jecklin disk or spaced pair - it will sound like you are standing there.

Made in the USA from solid aluminum, the mics are built to withstand the rigors of the studio or the road.  At only 5" long and 1" around they are easy to position and fit in standard mic clips.


  • Transducer type: 0.25" Electret condenser pressure
  • Polar pattern: omni-directional
  • Output level: 5.25 (mV/Pa)
  • Frequency response: 20 Hz - 20 kHz (+0/-2 db)
  • Equivalent noise: (A-weighted) 28 dB
  • Maximum SPL: 145 dB (with 48V powering)
  • Output impedance: 20Ω (load ≥ 1kΩ)
  • Power requirements: P48 phantom power (~6 mA)
  • Warranty: one year 

Product Specifications

Condition New
Package Contents Wooden box, mic clip
Unit Weight 0.23 lb
Tube or Solid State Solid State
Transducer Type Condenser
Polar Pattern Cardioid
Number of Microphones Stereo Pair
Phantom Required Yes
Impedance Electrical: 200 Ohm / Recommended load: 1 kOhm
Frequency Range 20 Hz - 20 kHz ±2 dB
Max. SPL 145 dB

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.