A and O Audio
No models listed yet.
TAC (September 8, 2011): A&O Audio was founded in 2007 by Ola Abrahamsson. From 2010 they started selling them under the Abrahamsson Audio brand. Their logo from then on was AA.
Abrahamsson Audio web site (September 8, 2011): A&O Audio is now a part of Abrahamsson Audio.