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Avedis Audio Electronics MA5 500 Series Microphone Preamp

Class A transformer-balanced mic preamp for 500 Series

Product Description

After some requests from audio engineers, the Avedis Audio MA5 was created for the need of a high quality microphone preamplifier in the characteristic sound of early 70s British consoles.  The re-engineering in the creation of the MA5 stemmed from years of experience restoring both American and British modules, deeply rooted in classic transformer-balanced, discrete electronics.  Only the best and most suitable components are used throughout, regardless of cost, to attain the best sound.

Much time was spent on the MA5, not only on the engineering side of the design, but also to extensive sound evaluations in observation of specific settings, gain structures, and key components spanning a time frame of a little over a year.

We have always believed that even with some of the best audio test analyzers we own and use, our ears' sensitivity, coupled with good judgment of sound through experience, is still unparalleled.  In the end, it is our ears we are trying to satisfy.


  • Standard 500 series modular size 1.5" x 5.25"
  • Single-ended Class A amplifier
  • UK made input transformer
  • Custom designed Jensen output transformer
  • Stepped gain rotary switch in 5dB steps
  • Output level pot for trim and mute
  • LED lit push-buttons
  • Special 28kHz button
  • Custom made Marconi style knobs
  • High headroom & CMR, Low noise design
  • 140ma current draw total, 70ma per rail

Product Specifications

Condition New
Tube or Solid State Solid State
Channels Single-Channel
Chassis Module
Module Type 500 Series
Module Slot Count 1 Slot
Direct Input No
Digital I/O No

Product Reviews

5 out of 5 stars.
Review Count (5)

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When it comes to nuance, dynamic range, smoothness across the spectrum, and that unmistakable but impossible to describe x-factor, the MA5 is IT. It’s just gorgeous-sounding - silky-yet-firm, warm-yet-precise, subtle-yet-sweet. These babies are the real deal - the kind of unit that will make people ask you what gear you use to get “that” sound.

By Samuel D on March 14, 2023

My journey for the LA2 sound has been fairly arduous. I came across the IGS One LA while looking at other units. I’ve tried the Manley ELOP, Audioscape Opto, and both the Warm and Klark offerings. The Manley is clean and nice- but doesn’t have the color I was looking for. The Audioscape has color, but I felt the gain staging was strange and I couldn’t get a good preamp to compressor relationship going. The Warm and Klark have nice color but sounded cheap next to the IGS. I really like the One LA. It pairs nicely with my Avedis MA5 and even makes my Apogee preamps sound great! I would highly recommend.

By Brian W on November 16, 2022

completely silent— blown away

By Christopher G on February 7, 2019

Teh Aveids MA5 is the go to preamp in our studio. This is the 10th pre we've put into our 500 series rack. These are used on sources ranging from drums to delicate strings and they always give us great tone. Big low end without being too slow on transients and a really nice, smooth, open top end, especially when we engage the 28K button

By River N on November 12, 2018

I recently picked up a second 500 series rack and a couple modules Ive had my eye on for awhile. I had a little left over in my budget so I decided to roll the dice on a preamp Ive never heard before and was on sale at VK.com. I read up a bit on the MA5 and found a lot of people use it for a variety of instruments, it tends to be pretty transparent sounding so really good for something that doesnt need any extra color. I do a lot of piano recording at my studio on my Baldwin Baby Grand, I typically use two mics inside the piano and one microphone close to the rear of the piano as a room mic. I ran the room mic through the MA5 the first session I had it hooked up, right off the bat it had more clarity and presence in the higher frequencies than any of my other preamps. I was so impressed how it sounded on the room mic I ended up buying another one to use for the two inside microphones. The MA5 had the same effect on the inside piano mics as well, I was thrilled with the tone I ended up buying a third MA5 and wont be looking back anytime soon for any other preamps on my Piano.

By STK on May 9, 2017

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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.
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