Reference Line Audio USA based amplifier manufacturer. Reference Line Audio, 3901 Beverly Hills Drive, High Point, NC 27265-1805, United States. Tel: +336 884 7394. Fax: +336 884 7394. Email: referenceline at hotmail.com
Refinement Canada Inc., Canadian trading house that specialises in selling Asian sourced low budget AV and audio products under the Technosonic brandname. Homepage:http://www.technosonic.com. Refinement Canada Inc., 15 West Pearce Street, Unit 2 & 3, Richmond Hill, Ontario Canada L4B 1H6. Tel: +905 882 9688. Fax: +905 882 9690 E-mail: info at technosonic.com.
Regnar US loudspeaker company, started by ex Dahlquist employers and indeed makes compatible drive units and can provide service and spares for that brand. Homepage:http://dahlquistspeakers.com.
Reid and Heath Acoustics Ltd. British company that sells in-ear and closed back headphones, mostly trades using their initials RHA, the same product line as they have was previously sold by a company based in the same home town called Audio Chi that appears to be related. Distribution: In France by Algam Homepage:http://www.rhacoustics.com . Reid and Heath Acoustics Ltd., 196 Bath Street, Glasgow, Lanarkshire G2 4HG, UK
Remote Technologies Inc. (RTI) USA based manufacturer of integrated and remote controls for home theatre applications. Homepage:http://www.rticorp.com. Distributed in Sweden by Canseda. Remote Technologies Inc., 7651 Anagram Drive, Eden Prairie, MN 55344, USA. Tel: +952 253 3100. Fax: 952 253 3131..
Reson Swiss company that designs high end pickups and turntables, also distribute and sells some high end audio brands. Homepage:http://www.reson.ch. Karlev Audio AG Tel:+41 5649 62248. Fax: +41 5649 65526. Email: reson at reson.ch
Danish company that is primarily a business and software consultancy that targets small businesses but as a side-line started producing loudspeakers in 2009 under the Quali-Fi brand, these are all high efficiency designs based around full range drivers and most of their products feature horns as well in addition to using a slightly unusual cabinet material in the form of bamboo. The speakers are designed in co-operation with Ole Br°ndum and that is where the brand-name comes from, but Hr. Br°ndum used to run one of the largest Danish importers of professional audio products under the Quali-Fi name in the 1980's. Company run by civil engineer and software developer Kurt B. Nielsen. Distribution: In Denmark by Studiosound Homepage:http://teamresponz.dk -- Quali-Fi Loudspeakers homepage. Respons ApS, Fyrre AllÚ 3, 6040 Egtved, Denmark. Tel: +45 6168 9118. E-Mail: info \at/ qualifi.dk
USA based company that operates a high end hi-fi showroom under its own name and manufactures valve based amplification and power supplies using the Purity Audio Design brand but the latter products are usually labelled just Purity. From circa 1998 to early 2010 the company and its predecessors sold high end cables and later valve amplifiers under the Response Audio label, and for a short while loudspeakers that were actually made by S. P. Technology Loudspeakers were also sold under that name as well, in addition up until the autumn of 2012 the company also offered modification services. Homepage:http://www.responseaudio.com. -- Purity Audio Design homepage Response Audio N. Y. LLC, 528 Woodford Avenue, Endicott, NY 13760, USA. Tel: +1 607 768 0067. E-Mail: Response34 ,at,aol.com .
Restek Legendary German manufacturer of high end electronics, in particular their amps are well known. Distribution: In Switzerland by Audiools by Braintools and in the UK by Sound Venture Homepage:http://www.restek.de . Restek Electronics oHG, Untere Feldstrasse 13, 34277 Fuldabrük, Germany. Email: info at restek.de
Revox German based manufacturer of high end audio & video style systems, multi-room systems and loudspeakers. Used to be the home and semi-pro brand for the Swiss pro-audio maker Studer but was split from the mother company by speculators in the 1990's and is now a completely independent unity, makes miltiroom systems in association with Gira. Distribution: In Iceland by S. Gujˇnsson, in Norway, Sweden and Denmark by McIntosh Nordic and in Poland by EIC. Homepage:http://www.revox.de -- Revox Schweiz -- Official Revox Youtube channel. Authorised repair centres :Soundsmith (USA - NY State) Revox GmbH, Am Kresgraben 15, 78048 Villingen-Schwenningen, Germany. Tel: +49 (0)7721 8704 0. Fax: +49 (0)7721 8704 29. E-Mail: info /at$ revox.de Revox AG, Wehntalerstrasse 190, 8105 Regensdorf, Switzerland. Tel: +41 44 871 66 11. Fax: +41 44 871 66 19. E-Mail: info /at$ revox.ch