AES Store

Journal Forum

Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007

Reflecting on Reflections - June 2014

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Access Journal Forum

AES E-Library

A Non Standard Op-Amp Based Mic Preamp Design Meets Studio Quality Noise Requirements

Contemporary transformerless mic preamp design frequently utilizes a state-of-the-art monolithic op-amp supplemented with the descrete input stage. This approach does provide an answer to op-amp's inherent noise problems, but it also violates some of its indispensible properties which opens a number of problems of different nature. The non-standard approach proposed in this paper however, copes with this problem by taking advantage of summation of the uncorrelated noise of n parallel conventional co-amps. This yields a substantial noise reduction, still retaining all of the op-amp's key features intact. Another advantage of this approach is statistical matching of some op-amp's properties thus making selecting obsolete, which can also be suitable for a higher volume production. The paper includes theoretical background with evaluation of some practical implications.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society