A&O Audio Swedish manufacturer of high end transistoried amplifiers based on a single ended full class-A topology, the people behind the company are the same as used to run Abrahamsson Audio A/S. Founded in 2007 and originally delivered products under the A&O Audio brandname but in 2010 started marketing them under the Abrahamsson Audio name with the front of the amplifiers being marked simply AA. The company did announce in 2008 that they would be introducing a line of kits to the market and appears to have delivered some in 2009 but there is no info on such portucts on their current homepage. Distribution: In Finland by Agentur Tur-Pex and in Greece by MF Audio Homepage:http://www.aoaudio.se -- Abrahamsson homepage -- Abrahamsson blog. A&O Audio, Blästadsgatan 75, 589 23 Linköping, Sweden. Tel: +46 708 80 62 94. E-Mail: contact %at; abrahamssonaudio.com
A.O.S. Audio Systeme German manufacturer of passive and active loudspeaker kits, also acts as the German and Austrian distributor of Scan-Speak and has custom made drivers made by that company that are not available anywhere else, company named after founder Axel Oberhage. Some of their loudspeaker designs are available in fully built high end versions from Tischlerei Lenz and a number of the plans can be downloaded from the company's website. Homepage:http://www.aos-lautsprecher.de. A.O.S. Audio Systeme, Schaidhaufweg 3, D-82405 Wessobrunn, Germany. Tel: +49 (0)8809 656. Fax: +49 (0)8809 569. E-Mail: info at aos-lautsprecher.de.
Apex Audio Systems UK based company that started out in the 70's as Cemac and manufactured amplifiers, changed its name to the current one a couple of years back and are today mainly occupied with the making of industrial audio systems although they still make some hi-fi amplifiers. Homepage:http://www.apexaudiosystems.com. Distributed in Israel by Eurotal Tech.
Aphex Systems Ltd USA based manufacturer of professional and semipro recording equipment, the company and in particular it's president Mr. Marvin Casear have a somewhat stormy relationship with audio magazines (at the least when he does not agree with their reviews). Homepage:http://www.aphex.com.
AQVOX German manufacturer of mid and high end audio electronics, some of their products are an exellent value esp. if you buy them direct via the website. Distribution: In Indonesia by Ultimate Audio Video, in Russia & the Ukraine by English Sound Ltd. and in Spain by Cosmos Hi-Fi Homepage:http://www.aqvox.de . AQVOX Audio Devices, Kegelhofstr. 29, 20251 Hamburg, Germany. Tel: +49 (0)40 410 068 90. Fax: +49 (0)40 467 797 14.