Manufacturers links – Rl ... R9

RL Acoustique
A manufacturer of horn loudspeakers based in Quebec, Canada. Also acts as the North American distributor of AER.


Road Gear See --> Audiovox

Roadstar Managment SA
Trading company registered and headquartered in Switzerland but operates primarily in Italy, sells budget audio, AV and car audio products under the Roadstar brand.

Initially founded in 1983 by Antonio Coda but he had distributed the Roadstar car audio products from Japanese company Sunrise House in Europe in the 70’s, after Sunrise disappeared and brand owner Fuji Electronics looked like they did not intend to continue with the business Mr Coda went on to found the RM SA and initially sold car audio products under the roadstar brand but later added other audio and AV electronics to the product mix, primarily in the budget segment. The company was bought by Alba PLC in 1996 primarily to gain a distribution base in southern Europe, however the company was run at a loss for years and Alba re-sold the division to Mr Coda in 2007 for 1 Euro.
Roadstar Management SA, Via Passeggiata 7, CH-6883 Novazzano, Switzerland.
Tel: +41 91 6975108. Fax +41 91 6975111. E-Mail:

Robert Allen Smith

USA based gent that manufactures loudspeakers under the Aether Audio brand, was one of the partners in S. P. Technology Loudspeakers and took over the manufacture of their line of speakers in 2009. Note that at this point in time the homepage is unavailable and supplies of the loudspeakers have been erratic recently.
Distribution: In Denmark by Studiosound
Homepage: -- Aether Audio discussion board at
Robert Allen Smith, 502 K Street, La Porte, Indiana 46350-5412, USA.
Tel: +1 219 324 8884. E-Mail: engineer .at.

Robert Evans

USA based gentleman that trades as Audio Atelier, manufactures bespoke valve based hi-fi amplifiers in addition to offering repair services for valve based home audio and musical instrument amplifiers.
Robert Evans, 823 E. 4th Avenue (in the alley), Durango, CO 81301, USA.
Tel: +1 970 259 3746. E-Mail: rcevans [at]

Robert Gaboury

Canadian gentleman that is just starting production of high end loudspeakers under the Arteluthe brand, note that there is no info on his homepage but his Facebook page has quite a bit of info and progress reports.
Homepage: -- Facebook page
Robert Gaboury, 20 Place Valmont, Lorraine, QC J6Z3X8, Canada.

Robert Koda
Japanese manufacturer of high end valve based amplifiers, company founded in 2008 by South African gent Robert Koch who used to work for Audio Note/Kondo, for background info you can read an interview with Hr Koch from Mono and
Distribution: In Hong Kong by Audio Exotics
Homepage: .
Robert Koda LLC, 1-9-4 Azusawa, Itabashi Ku,Tokyo 174-0051, Japan.
Fax: +81 (0)3 5392 4339. E-Mail: sales at

Robert Royal Fritz

USA based gent that trades as Audio Art Cable, makes high end loudspeaker cables, interconnects and power cables in association with DH Labs.
Distribution: In Canada by USA Hifi, in China, Hong Kong and Macau by Audio Supplies Company Limited, in India by ARN Retail Management?, in Indonesia, Malaysia and Singapore by Raindrop Audio and in Lithuania by Uab Kohorta
Homepage: .
Robert Royal Fritz, 4665 Altadena Avenue, San Diego, CA 92115-3311, USA.
Tel: +1 619 255 6451. E-Mail: robfritz (at)

Roberts Radio Ltd.
British manufacturer of portable radios and similar products.
Distribution: In Canada by Planet of Sound Hifi, in Germany by Audio Selection Creaktiv and in Sweden by Transient Design
Homepage: .
Roberts Radio Ltd, PO Box 130, Mexborough, South Yorkshire S64 8YT, UK.
Tel: +44(0)1709 571722. Fax +44(0)1709 571255. E-Mail: International_enquiries /at%

Manufacturer of loudspeakers and hi-fi separates based in Singapore.

Robson Acoustics
UK based high end audio dealer that also has a line of loudspeakers.
Distribution: In Holland by YN Audio
Homepage: .
Robson Acoustics, Stonebeck Grange, Thomas Close, Penrith, Cumbria CA11 9QF, UK.
Tel: +44 (0)1768 484000. E-Mail: sales (at]

Rock Garden Speaker See --> Tec - Pac

Rockport Technologies
USA based manufacturer of high end loudspeakers and turntables.
Distribution: In Greece and Cyprus by MF Audio
Homepage: .
Rockport Technologies, 229 Mill Street, Rockport, Maine 04856, USA.
Tel: +207 596 7151. Fax: +207 596 0928

Rocksonic Industry Co.
Taiwanese manufacturer of car audio loudspeakers and budget home hi-fi/multimendia/theatre systems and components, mostly an OEM but also supplies under it's own brand. Company also known as Solartron International.

USA based manufacturer of outdoor speakers formed to look like rocks.

Rogers (Loudspeakers & valve amplifiers) See --> Wo Kee Hong

Roger A. Modjeski
USA based gentleman that manufactures valve based amplification and cables under the Music Reference brand, sells matched thermionic valves under the RAM Tube Works name and holds out a parts store under the "" label.
Homepage: --
Roger A. Modjeski, PO Box 40807, Santa Barbara, CA 93140, USA.
Tel: +1 805 687 2236. E-Mail: roger /at%

Roksan Audio Limited
UK manufacturer of turntables, tonarms, pickups, CD players and more high end audio stuff.
Homepage: Alternative homepage.
Distributed in Belgium, France & Luxembourgh by Audio Marketing Services, in Canada by Liberty Trading, in Denmark by Genesis Audio, in Germany by B & T Hi-Fi Vertrieb, in Holland by Monitor Audio Nederland, in Hong Kong by Elephant Holdings, in Malaysia by The Experts Group Malaysia, in Norway by Hi-Fi Huset, in Poland by Decibel Distribution, in Romania by Hi-Fi Expert, in Singapore by Absolute Sound Distribution, in Switzerland by Fidelity Sound, UK distribution is handled by Henley Designs and in the USA by May Audio Marketing.

Rola Australia
Australian manufacturer of brodcast audio products in addition to making the Valvetron home hi-fi and professional hybrid solid state/valve amplifiers, also acts as the local distributor of BSI Software and Panaxis Productions.
Rola Australia, P.O. Box 314 Blackwood, South Australia 5051.
Tel: +61 08 82703175. Fax: +61 08 82703175. E-Mail: gtd at

Role Audio See --> NSM Audio

Rolf Kelch Electronic GmbH
German manufacturer of high end turntables, Hr. Kelch is also the former production manager at Thorens and acquired much of the spare parts stock the original company had and offers repairs and upgrades to older Thorens turntables. The company was un-contactable during much of 2011 since they had to close their original office down due to nonn-payments from a distributor that went missing but has re-started business in 2012 but is for the moment only contactable via telephone.
Tel: +49 (0)1578 2260789..

Ron Smith Aerials
British manufacturer of radio and TV aerials, they have a design or 2 of FM aerials that are so big that you will in most cases have to get permission from the building authorities if you plan to use them in Europe.

Room Acoustics
Malaysian company that manufactures bass traps and other acoustical treatments.
Phone: +6 016 2722574. Fax: +6 03 62533712. Email: jamsave at

Roos Electronics

Dutch trading company, primarily sells household products but does sell CE accessories such as AV cables, interconnects, adapters and cable hiders under the ELRO brand. Part of the Smartwares group.
Roos Electronic B. V., Broekakkerweg 15,5126 BD Gilze, Holland.
Tel: +31 0161 455363. Fax: +31 0161 455999. E-Mail: E.Verhagen .at. .

Röschlau & Lorenzi

German company that is primarily a contract manufacturer active in the aerospace industry but did during the noughties build up a reputation in the audio field, but their work included building turntables and turntable parts for companies such as Brinkmann and Continuum Audio Labs. In 2010 the company show off a turntable and an arm that it was selling under its own name but in late 2011 the started selling it under the Analog Manufaktur Germany or AMG brand. Company dates back at the least to the 80's when it was known as "Helicopter Transport Nürnberg Werner Röschlau GmbH" .
Distribution: In Australia by Absolute Hi End, in the Americas, Pacific and Asia by Musical Surroundings and in Europe, the middle east and Africa by High Fidelity Studio
Homepage: .
Röschlau und Lorenzi GmbH, Alpinenstr. 4, 93152 Nittendorf - Schönhofen, Germany.
Tel: +49 (0)9404 6 41 03 16. E-Mail: werner.roeschlau )at)

Ross Custom Cabinets
A bespoke loudspeaker cabinet maker based in the UK.

Rossner & Sohn
Manufactures high end turntables and related paraphernalia.
International distribution by Imagine Studios axcept for Asia where it is handled by Asia Theatre Engineering, in Scandinavia by High End Sound, in Switzerland by Ouir Ton & Technik and in the UK by The Audiophile Club

Rosso Fiorentino (Loudspeakers) See --> GEA

Company based in Hong Kong, design group in HK and the UK and, makes a well regarded line-up of low to mid end hi-fi and audio-visual separates and has been one of the pioneers of the "budget audiophile" market segment although it's leaning higher up these days. Originally known as Roland.
Distributed in Cyprus by Modestou Sound & Vision, in the Czech Republic by Eurostrar Ostrava, in Macedonia by D. T. Kodi, in Malaysia by The Experts Group Malaysia, in Poland by Audio Klan, in Singapore by The Experts Group, in the UAE by Archimedia and in Yugoslavia by Korato.

Roth AV Ltd.
UK based company that sells loudspeaker systems for hi-fi and AV usage, valve based ipod docks and other multimedia style speaker systems, all sourced from Asia.
Distribution: In Australia by Maxmedia, in France by DEA International, in Poland by Rafko and in Sweden by Audio Concept
Homepage: .
Roth AV Limited, Unit 1 Poyle 14, Industrial Estate, Newlands Drive, Colnbrook SL3 0DX, UK.
Tel: +44 (0)1753 682782 (sales) or +44 (0)7534 026939 (support). E-Mail: support /at% or turnitup ]at]

Rothwell Audio Products
British maker of amplification both valve based and transistorised, also has cables and other interconnects. Formerly known as Rothwell Electronics.
Distributed in Germany by Audiophile Hifi-Producte

Rouge Audio Inc.
USA based maker of valve amplification.
Distributed in Greece by Acoustic Design, in Hong Kong by Hit Audio, in Indonesia by Danumuri Adhika and in the UK by Audiocraft Distribution.
Phone: 570 992 9901. Email: info at

Rovann (Hi-fi and AV furniture) See --> LIG Industries

A manufacturer of high end amplification and loudspeakers intended for audio and AV usage, based in Switzerland.
Distributed in Switzerland by Dynavox SA

Rowland Research See --> Jeff Rowland

Royal Device See --> Aliante

RRR See --> VEF Radiotehnika RRR

RS Audio Cables LLC
USA based manufacturer of cables and interconnects, the RS in the name are the initials of founder Richard Sachek.
Distributed in Indonesia by Danumuri Adhika and in the UK by Angelsound Audio
RS Audio Cables, 16331 Estuary Ct., Bokeelia, FL 33922, USA.
E-Mail: sales at

German manufacturer of horn loudspeakers.

RSL Speaker Systems
USA based company that sells multimedia loudspeakers.

RTI See --> RTI

UK based company that has been making loudspeakers sold under the Ruark name since 1987 but in 2006 started selling portable DAB radios under the Vita Audio brand, it has since retired the Vita name and instead now uses “Ruark Audio” for their portable audio and music systems. There are in fact some indications that the company has ceased making loudspeakers.
Distribution: In Slovenia by E.I.S.
Homepage: -- Ruark Audio homepage.
Ruark Distribution Limited, 59 Tailors Court, Temple Farm Industrial Estate, Southend-on-Sea, Essex, SS2 5TH, United Kingdom.
Tel: +44 (0) 1702 601410. Fax: +44 (0) 1702 601414.

Rudi Stor
Italian manufacturer of amplification, has both silicon and valve based systems.

USA based manufacturer of AV products such as projectors.
Distributed in the Czech Republic by Finale Audio, in Norway by T.AA. Import, in Poland by Rhythmica, in Sweden by Tonkraft Scandinavia and in the UK by See Hear.
Runco International, 2900 Faber Street, Union City, CA 94587, USA.
Tel: +510 324 7777. Fax: +510 324 9300..

Running Springs
USA based company that manufactures high end power conditioners.
Distribution: In South Korea by Sonoris High End Audio & Video
Homepage: .
Running Springs Inc., 1800 E. Via Burton Street, Anaheim, CA 92806, USA.
Tel: +1 814 474 1571. Fax: +1 814 474 3110.

USA based manufacturer of multiroom controllers and other AV products.
Distribution: In Austria by Audio Tuning, in Egypt by Intellitech, in Finland by AH Hifisystems, in Greece by Acoustic Design, in Hong Kong by Amalgamated Techniques, in Hungary by Annex Trading, in Italy by ProAudio Italia and in the UK by Lenbrook UK.
Homepage: .
Russound, 5 Forbes Road, Newmarket, NH 03857, USA.
Tel: +1 603 659 5170. Fax: +1 603 659 5388. E-Mail: sales:at&

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The site was last compiled on Sun Nov 10 2013 at 9:15:00am