Audix ADX51

Small-diaphragm Cardioid Condenser Microphone
Audix ADX51 image 1
Audix ADX51 image 1
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Audix ADX51
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Great mic for instruments and drums!

The ADX51 is a pre-polarized condenser microphone designed to handle a wide variety of live, studio, and broadcast applications. Characterized with a cardioid pickup pattern and a smooth uniform response over a frequency range of 40-18kHz, the ADX51 is precision machined from solid brass with a low reflective black e-coat finish. Low-noise electronic circuitry, low impedance, and balanced output allow interference-free performance even with long cable runs. Road-worthy and capable of reproducing high SPLs of 132dB, the ADX51 is perfect for studio or stage.

Audix ADX51 Features:
  • Small-diaphragm Condenser
  • Cardioid Polar Pattern
  • 40Hz-18kHz
  • Ideal for overheads, cymbals, hi-hat, acoustic instruments
  • Switchable 10dB pad
  • 150 Hz bass roll off
  • Clip, windscreen, and pouch included
  • Impedance - 100 ohms balanced
  • mV/Pascal Sensitivity - 15.9 mV
  • Off-Axis Rejection - >20dB
  • Max SPL - 132dB
  • Requires +48V phantom power

Additional Media

ADX51 Spec Sheet
Studio Microphone Buying Guide

Tech Specs

Microphone Type Condenser
Polar Pattern Cardioid
Diaphragm Size 0.55" (14mm)
Frequency Response 40Hz-18kHz
Max SPL 132dB
Output Impedance 100 ohms
Low Cut Filter 150Hz
Pads -10dB
Connector XLR
Weight 0.41 lbs.
Manufacturer Part Number ADX51

Customer Reviews

Based on 5 reviews
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Let's just say I bought a pair of these not expecting all that much. After a weak of them as my drum overheads in my home studio, I sold my Neumann and Mojave pairs and kept these. I love them and found no need for anything else for my overhead duties!
Music background: Experienced

My go-to small diaphragm condenser

I own a pair of these and have no regrets at all. I'd agree with others that this would be similar in character to the Shure SM81. To my ear, it sounds a bit more refined in the upper mids. I haven't found a situation yet where this mic gave me a "bad" sound, which is more than I can say for my Neumann KM184 pair, which tends to sound overly bright and can verge on harsh. From acoustic guitar, to overheads, to percussion, the Audix has always given a faithful, non-hyped representation of the sound source, which I appreciate. As I'm writing this review I'm actually asking myself why I haven't sold my KM184's yet... Hmmmmm.... Given the fact that I've played over 100 shows so far with my ADX51s with ZERO problems, I'd say I'm confident recommending it for touring. For the studio, where you would baby it, it's a no-brainer. I've recommended the ADX51 to friends who have purchased them and LOVE them. In fact, I was going to give it 4.5 stars, but I literally can't come up with one single reason not to give it 5. Overall, it's a solid, road-tested, super-quiet, articulate, detailed mic. You will NOT be disappointed with this mic.
Music background: Pro

Great Pencil Condenser

Bought the Audix expanded drum mic kit which included three of these - two overheads and one for hi-hat. I've also used this mic recording acoustic guitars and upright bass with great results. This mic is quite good for many sound sources. If you're considering this mic, don't be afraid to pull the trigger. I have no problems using it on serious tracking sessions in a variety of applications. The roll-off and pad are nice options to have.
Music background: Studio Owner, Performer, Local Producer

Surprisingly good

I got a pair of these from Audix's DP7 drum pack and was very skeptical that these mics could actually be any good, after all they cost a couple hundred dollars. Not to mention they are so light they feel cheap. Much to my surprise they are excellent workhorse mics. These puppies are clear, consistent and very transparent. I own and use a variety of small diaphragm condensers and I can see no reason NOT to use these microphones thanks to their transparent character. In many situations its better use these than a "superior" microfone such as the KM184 or the MA100. Mad props for Audix as their mics kick butt. HIGHLY RECOMMENDED!
Music background: Studio Owner - Boom Sound Design

Great Sound but have had reliability issues

These sounds similar to and would compete with a Shure SM81. I like the mic, but I have had 3 develop a 10k hissing sound and can no longer use them except for backup on loud micing situations (drum overhead). I will buy the SM81 next time
Music background: Live Sound Engineer and Musician
See also: Condenser Mics, Audix, Audix Condenser Microphones, Audix Condenser Microphones