The DIGI-COUPLER 75 Ohm (hlgn fr.)True transmission technology * Hybrid design * Halogeen free

The DIGI-COUPLER 75 Ohm is our top level SPDIF digital audio interconnect cable, though is equally suited for Video and HF signal transport at a maximum performance level.

The DIGI-COUPLER 75 Ohm has been specially designed bearing the highest possible transmission quality of 75 Ohm impedance level SPDIF consumer format digital audio in mind, and is aimed at the critical audiophile as well as the professional.

The DIGI-COUPLER 75 Ohm’s special design covers all aspects required for a flawless and reliable transmission of SPDIF digital audio at short range as well as across large studio distances and allows for notable improvements in your audio quality.
The cable’s strict HF design likewise benefits the transport of Video and HF signals well into the GigaHertz range.

Features:

  • The DIGI-COUPLER 75 Ohm features a very constant and precise 75 Ohm impedance: 75 Ohm ± 0.5 Ohm up to 3 GHz.

This is important, since otherwise the signal will be reflected up and down the cable (i.e. standing waves). Such signal reflections deteriorate signal integrity by causing the digital audio signal as seen at the receiving end to be overlapped with time delayed replicas of itself (i.e. signal reflection induced inter-symbol interference).At the receiving side this negatively influences the D-to-A converter clock retrieval circuitry’s (PLL’s) ability to maintain a stable sample rate (i.e. fluctuations in the timing interval between the audio signal’s samples occur).
The resulting distortion of the audio signal is officially called “jitter distortion” and is particularly perceivable as reduced resolution and imaging.

 Note: To maintain a precise 75 Ohm impedance and avoid signal reflections, the advised minimum value of bending radius for The DIGI-COUPLER 75 Ohm is 8.0 cm.

 

  • The DIGI-COUPLER 75 Ohm features a very high frequency bandwidth.
    As an example: The -3 dB bandwidth of a 10 m. run is 770 MHz. (For more data see Attenuation graph in the sidebar)A high bandwidth is important: An SPDIF digital audio signal contains frequencies that extend far beyond the usually specified minimum required bandwidth (~6 MHz). Even though this minimum bandwidth provides useable transmission, accurate data transmission and recovery of low-jitter clocks in real-world noisy environments will benefit from greatly increased bandwidth:The digital audio signal consists of elementary data units (bits) in the form of zeros and ones. These are square waves (merlon shaped elements) which vertical edges serve as a demarcation for the signal receiving circuitry (e.g. D-to-A converter) to be able to retrieve the signal clock and to recognise the contained bit values.Cable bandwidth decreases with cable length used. Lower bandwidths increasingly cause the digital audio signal’s square waves edges to get rounded off and become smeared over time (inter-symbol interference). This impairs the receiving circuitry’s ability to correctly determine the individual bit values and their timing. The so-called “jitter distortion” and “bit error rate” increase and the audio quality decreases.
 A short note regarding optical fiber cables for digital audio and bandwidth:
 Although these exhibit a very high bandwidth and near perfect noise immunity by themselves, the bandwidth of the unavoidably extra involved optical transmitter and receiver parts (especially those used in common consumer devices) is one of the most important performance limiting factors. Others are: The optical power available, so-called modal dispersion, attenuation and connector transition losses.
 Depending on the situation, though in many cases, coaxial SPDIF transfer is preferable if low jitter distortion replay is aimed at. This provided a good cable like our The DIGI-COUPLER 75 Ohm is used...

 

 

 

  • The DIGI-COUPLER 75 Ohm features a very low signal attenuation per unit length. As an example: At 100 MHz the attenuation is a mere 0.11 dB/m. (For more data see HF Performance Graphs in the sidebar).Low signal attenuation (i.e. low signal loss) is especially important when long cable runs are used (e.g. in professional / studio applications).To maintain optimum signal quality, a maximum signal to noise ratio at the signal receiving side is required. The signal therefore needs to undergo as little as possible attenuation during transport. This of course equally applies to digital audio as to video and HF signals.A low signal attenuation also positively adds to immunity against external noise, though latter starts with a good shielding:
  • The DIGI-COUPLER 75 Ohm is a so-called “Superscreened” or “Low Transfer Impedance type” cable.
    To maximize performance in keeping the signal in and noise (RFI and EMI) out, the highest possible shielding factor is required. Without making compromises, The DIGI-COUPLER 75 Ohm’s design therefore features a so-called “triaxial construction” which makes use of multiple highest quality shields.
 (Triaxial construction: essentially a coaxial cable surrounded by an extra separately insulated shield).

In The DIGI-COUPLER 75 Ohm not less than 3 dense braided shields, 3 foil shields and a Linear Structured Carbon ® (LSC) saturated outer layer are used, which combined shielding factor results into an ultra high screening attenuation and an ultra low transfer impedance; This allowing the cable to carry the designation “Superscreened”.

The DIGI-COUPLER 75 Ohm’s supreme immunity against radio frequency and electromagnetic interference allows trouble-free use of large lengths. Multiple lengths can be run in parallel without risk of mutual interference, even with other cabling (e.g. in cable conduits).

Signal cables are denominated “Superscreened” or “Low Transfer Impedance type” when their Transfer Impedance is as low as or lies below 50 µOhm/m.
The Transfer Impedance is a measure for the quality of the shielding and is defined as the relation of the voltage along the screen of the disturbed system to the current of the disturbing system.
The lower the Transfer Impedance of a cable the less susceptible its transferred signal is to external interference, but equally the other way around: the less noise the cable itself radiates.
The latter is also expressed in the so-called screening attenuation figure, which indicates the ratio between the power radiated from the cable and the signal level it transports.
Our Superscreened The DIGI-COUPLER 75 Ohm cable’s screening attenuation and transfer impedance show excellent figures up to our measurement limit of 3 GigaHertz (see HF Performance Graphs below).

 

  • The DIGI-COUPLER 75 Ohm features high purity dense silver coated stranded shields as well as a rugged and hard-wearing jacket made of our HULLIFLEX ® polymer insulation material. All providing an optimal protection against chemical (corrosive) attack from the outside world and ensuring a very long lifespan.

Bearing professional, broadcast and high resolution applications in mind, The DIGI-COUPLER 75 Ohm’s design has all the technology on board for exceptional performance without compromise.

The DIGI-COUPLER 75 Ohm provides the cleanest possible signal transport in all 75 Ohm impedance level applications and is the ultimate choice for the critical audiophile, videophile and professional.

Next to our standard sales units (see specifications below) The DIGI-COUPLER 75 Ohm is also available on 100 m. reels fitted with end-caps to prevent any entrance of chemically polluted air.

Shipping: 1 x 100 m. reel in a 320 x 320 x 310 mm. box with a total shipping weight of 10.4 kg.

The DIGI-COUPLER 75 Ohm (hlgn fr.)

Specifications

Following

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Fung Ning Audio Equipment (Asia) Limited) (retailer in Hong Kong area)
e4 f, Cheong Ming Building, 80-86 Argyle St, Mong Kok, Hong Kong
Sonido Paul
Don Bosco 3532, C1206ABD CABA, Argentinië
Primaudial Sound Pvt Ltd
suite 2, 1 Fredrica Rd, Colombo, Sri Lanka
Sonic Wave LLC
Le Solarium - Dubai Silicon Oasis - Dubai - United Arab Emirates
The Sound & Vision Group Pty Ltd.
192 Melbourne Rd, Williamstown VIC 3016, Australia
VPI Industries – VDH Phono cartridges
77 Cliffwood Ave W #5D, Cliffwood, NJ 07721, USA
Cinema Focus (India) Pvt.Ltd.
New Decor Towers, Dr Radha Krishnan Salai, Sullivan Garden, Mylapore, Chennai, Tamil Nadu 600004, India
Alef Hi-Fi
1-Y Nagatinskiy Proyezd, 10, стр. 1, Moskva, Rusland, 115230
Ultimate Audio
R. Casquilha 2A, 1500-151 Lisboa, Portugal
Zesen Hi-Fi Company
Shantou, Guangdong, China
JWON Korea Co. (Audio cables)
70 Wonhyo-ro, Yongsan-gu, Seoul, Zuid-Korea
ODO Intonation
Minsk, Wit-Rusland
HI END SOUND RAMALA
Allegro Hi-Fi
Avenida La Dehesa, Torre Oriente 1201, Of. 524, 7690277 Lo Barnechea, Región Metropolitana, Chile
Kraske Electronics A.G.
Leonhardsgraben 52, 4051 Basel, Switzerland
B & T HiFi Vertrieb GmbH
Hauptstraße 27, 40699 Erkrath, Germany
AudioShield LLC – VDH Cables and Electronics
1532 U.S. 41 Bypass S #229, Venice, FL 34293, USA
Casa Tentaciones
Adrian Jara esquina Regimiento Piribebuy, Shopping Hijazi, Cd. del Este 7000, Paraguay
Sky-C Solutions B.V.
Azorenweg, Willemstad, Curaçao
Solar Audio
Gral. Pueyrredón 163, B1641 Acassuso, Provincia de Buenos Aires, Argentina
HBD Audio Revelations
Retief Pl, Carrington Heights, Berea, 4001, South Africa
Sarl Equip Auto
Pape'ete, French Polynesia
The Experts Private Group Limited – Malaysia Boutique Showroom
The Boulevard, Mid Valley City, Lingkaran Syed Putra, 59200 Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
The Experts Private Group Limited – Lavendar Street Boutique Showroom
409 North Bridge Rd, Singapore
The Experts Group Private Limited – B&W Millenia Boutique Showroom
107 North Bridge Rd, Singapore 179105
PT. TEG Distribution Indonesia (The Experts Group)
Jl. Tanjung Duren Raya No.1, RT.11/RW.1, Tanjung Duren Utara, Grogol Petamburan, RT.11/RW.1, Tj. Duren Utara, Grogol petamburan, Kota Jakarta Barat, Daerah Khusus Ibukota Jakarta 11470, Indonesia
Woori Audio (Phono and electronics only)
610-9 Junggok-dong, Gwangjin-gu, Seoul, Zuid-Korea
Sounds Inc.
Cairo street, in front of Babel theater, Hamra, Salamoun Bldg, 1st floor, Beirut, Lebanon
Arama Audio
Moshe Sharet St 29, Rehovot, Israel
Royal Asia Corp.
No. 60, Minzu East Road, Zhongshan District, Taipei City, Taiwan 10491
Extreme Audio
Yol Mevkii Sheraton B2 Kat 34398, Maslak Mahallesi, Eski Büyükdere Cd. No:3, 34752 Şişli/İstanbul, Turkey
Esoteric
206-8530, Japan
Turntableone
99/6-9 Chaturathit Rd, Khwaeng Bang Kapi, Khet Huai Khwang, Krung Thep Maha Nakhon 10310, Thailand
NGUYEN AUDIO CO. LTD.
Ward 25, 53 Ung Văn Khiêm, Phường 25, Bình Thạnh, Hồ Chí Minh, Vietnam
Hi-Fi Magic
Kathmandu 44600, Nepal
Karma Digital Ltd.
Boryslavska St, 53, Kyiv, Ukraine
Digitalbild Sverige AB
Engelbrekts väg 13, 191 62 Sollentuna, Sweden
Platan
M. R. Štefánika 261/12, 920 01 Hlohovec, Slovakia
Korato
Mileševska 66, Beograd 11000, Serbia
Stereomag.ro
Strada Vasile Alecsandri 14, București, Romania
Audio Marketing
Via del Meridiano, 38, 47895 Domagnano, San Marino
Mono AS
Østerdalsgata 1, 0658 Oslo, Norway
VISION d.o.o.
Bul. Srbija b.b. Reon 11, Skopje 1000, North Macedonia
UAB “A CAPPELLA”
Aušros Vartų g. 5, Vilnius 01305, Lithuania
Balt Audio
Brīvības iela 169, Vidzemes priekšpilsēta, Rīga, LV-1012, Latvia
Samat Electronic Ltd.
Karasai Batyr St 88, Almaty, Kazakhstan
MPI Electronic Srl.
Via Edmondo de Amicis, 10, 20010 Cornaredo MI, Italy
Cloney Audio
55 Main St, Blackrock, Co. Dublin, A94 W4F3, Ireland
Zebraudio
Budapest, Friss u. 3, 1098 Hungary
Exclusive Audio
Ioannou Apostolopoulou 59, Athina 104 45, Greece
Technology Science & Art SARL
30 Av. Graham Bell, 77600 Bussy-Saint-Georges, France
Audiokauppa Finland Oy
Helletorpankatu 39, 05840 Hyvinkää, Finland
Mobicom Systems AS
Toompuiestee 18, 10137 Tallinn, Estonia
High-End Audio Studio
Belgická 278/4, Vinohrady, 120 00 Praha-Praha 2, Czechia
P.K. Digital Hi-Fi Ltd.
Ifigenias, Nicosia, Cyprus
Nove Boje Zvuka D.O.O.
Ul. grada Vukovara 52, 10000, Zagreb, Kroatië
TS Multimedia
bul. "Bulgaria" 110, m2, 1408 ж.к. Стрелбище, Sofia, Bulgaria
Audio Tuning
Margaretenstraße 98, 1050 Wien, Austria
Decent Audio
Castlegate Mill, Riverside, Stockton-on-Tees TS18 1BZ, UK
Electronica Sarte Audio Elite
Carrer del Pare Jofré, 22, 46007 València, Valencia, Spain
Radioactiv
Kirkegade 150, 6700 Esbjerg, Denmark
Music2 Audio Import (Phono and electronics only)
Geestweg 40B, 2671 ED Naaldwijk, Netherlands
Audio System
Henryka Brodatego 3, 00-001 Warszawa, Polen
HNNY
Venkelbaan 29, 2908 KE Capelle aan den IJssel, Nederland

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