The Black Hole Mains FilterTrue transmission technology * Hybrid design * Halogeen free

Our task was set to design the ultimate mains filter for audio and video equipment use, aimed at outperforming all standard passive filters on the market and perfectly matching the high quality of our cable and phono cartridge products.

Bearing ultimate performance and reliability in mind, the filter was designed entirely fresh from the ground up and has been fit with the highest quality components.

The result, the van den Hul BLACK HOLE, is a heavy and powerful four outlet passive mains filter which core design is based on entirely new technology and concepts.

The BLACK HOLE provides high-end audio, video and mixed setups with perfectly clean mains power, is capable of handling up to 1800 Watt total connected load and is equipped with four individually noise-isolated outlets: two higher power outlets, intended for power amps and other heavy loads and two lower power outlets, intended for pre-amps, CD- and DVD players, LCD TVs, etc.

Acting as the best thinkable external firewall solution, The BLACK HOLE effectively deals with all potential mains related A/V quality degradation mechanisms, this whereas most other passive mains filter units only crudely deal with a few.

The BLACK HOLE cuts mains-borne noise and spikes, removes direct current and provides high frequency isolation from mains.
Ultimate performance is furthermore delivered by a highly advanced circuit design which is resonance-free and adds our unique Dynamic Noise Absorption (DNA) concept.

The (noisy) background:

Audio and video signal quality is continuously threatened by the ever increasing amount of electromagnetic interference surrounding us.

There are two main pathways along which such interference can corrupt your audio and video signals:

  1. Along the power supply: The mains power from your outlets is corrupted with noise, spikes and transients caused by switching equipment, motors, non-linear loads (like switch-mode power supplies e.g. in computers) as well as dimmed and fluorescent lighting, all hooked up to the large utility transformer supplying mains power to your neighbourhood.
  2. Along the air: Electromagnetic (radio frequency) interference from radio and TV transmitters, wireless computer devices, mobile phones and so on.

The amount of countermeasures taken inside audio and video equipment against such interference strongly varies between brand and type, and both pathways of noise entrance are not always sufficiently accounted for.

It generally takes only one “more susceptible” component hooked up in your A/V chain to receive or pass on such noise to cause loss of audio or video signal transparency.

Last but not least: various A/V equipment’s built in power supplies also introduce interference by themselves.

To provide the best thinkable solution to above mentioned problems, we have designed The BLACK HOLE.

This filter in short works by removing mains interference as well as interference caused by the equipment’s own power supply behaviour, while at the same time blocking important pathways along which airborne interference and mains noise can propagate between the connected devices themselves. This in effect provides each hooked-up unit with its own clean noise-isolated AC power, while maintaining full surge power demand transparency (i.e. unimpeded current transfer);

Your A/V setup will much more behave like each connected device has its own isolated power supply.

The BLACK HOLE features:

  • Multiple filter stages:
    Entering the filter, mains power passes through not less than 12 functional filtering stages before reaching each outlet. This heavy “noise crunching” provides very broad-band noise suppression: starting from roughly 1 kHz well into the Gigahertz range.

 

  • Direct current removal:
    This means no more humming transformers in your equipment. The power transformers also produce much less distortion, induce less mechanical vibration to sensitive components and last but not least: are able to deliver significantly larger peak currents on demand; This means more dynamics as well as dynamic power during loud music passages.

 

  • Resonance-free:
    Most passive filters have built-in electrical resonances which can even amplify and concentrate power line noise. As such more easily reaching into your equipment, these resonances can change sound character and background. The BLACK HOLE on the other hand prevents and even fights both internal and external resonances, thus keeping the power lines to your equipment dead quiet.

 

  • Dynamic Noise Absorption (DNA):
    DNA tracks the mains voltage waveform and irons out pulses and other noise-like irregularities by eating away their energy and peacefully digesting it into inaudible heat.

 

  • Individually noise-isolated outlets:
    Effectively blocking all noise propagation paths, each of the filter’s outlets provide high frequency noise isolation from mains as well as mutually between loads.

 

  • Zero power loss:
    The filter is built with minimal impedance high current paths which preserve full surge power demand transparency and provide unimpeded current transfer; Power is immediately there when your equipment needs it.

 

  • Powerful and fast surge protection:
    The filter is equipped with a robust 8000 Ampere transient/pulse-overload voltage protection circuit with nanosecond response time.

 

  • Very low quiescent power consumption:
    The filter by itself consumes only about 4 Watt (which is probably less than your TV set in standby mode).

 

‘SOUNDS LIKE THERE’S A BLACK HOLE INSIDE’

Vacuuming the noise from your mains power, The van den Hul BLACK HOLE provides your A/V system with markedly improved transparency, definition, detail and dynamics.

An advance in sound and video quality hard to switch back from once you are used to it…

The BLACK HOLE furthermore forms a perfect combination with our The MAINSSTREAM and MAINSSERVER Hybrid power cables.

 

Specifications

  • Rated supply voltage: 220-240 V ~ AC, 50/60 Hz
  • Suitable for 230 volt based mains around the world including Australia (240 V), Brazil and Saudi Arabia (220 V 60 Hz).

Maximum allowed total load current (all outlets together):

  • 8 Amperes (*)
 *: Thermal circuit breaker inside ON/OFF switch engages at total load currents exceeding 8 Amperes RMS

Maximum allowed output current (individual outlets):

  • Each low power outlet: 2 Amperes
  • Each high power outlet: 8 Amperes

Quiescent power consumption (unloaded):

  • Switched ON: 3.5 Watt at 230 V ~ AC 50 Hz
  • 4.2 Watt at 220 V ~ AC 60 Hz
  • Switched OFF: 0 Watt

The Black Hole Mains Filter

Specifications

Following

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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
Roksan Trading Co. (phono only)
Hongkong, Kwun Tong, Flat B2, 12/F, Good Luck Industrial Building, 105 How Ming StreetKowloon, Hong Kong
Point International General Trading LLC. Dubai
Baniyas Street, Opp.Etisilat Tower, Dubai Creek - Dubai - Verenigde Arabische Emiraten
JWON Korea Co. (Audio cables)
70 Wonhyo-ro, Yongsan-gu, Seoul, Zuid-Korea
ODO Intonation
Minsk, Wit-Rusland
HI END SOUND RAMALA
AVTEC Limitada
Sta. Verónica 741, Las Condes, Región Metropolitana, Chili
Kraske Electronics A.G.
Leonhardsgraben 52, 4051 Basel, Switzerland
B & T HiFi Vertrieb GmbH
Hauptstraße 27, 40699 Erkrath, Germany
Finest Fidelity Inc.
3 Sagebrook Dr, Bluffton, SC 29910, USA
Casa Tentaciones
Adrian Jara esquina Regimiento Piribebuy, Shopping Hijazi, Cd. del Este 7000, Paraguay
Sky-C Solutions B.V.
Azorenweg, Willemstad, Curaçao
Star Audio
Martínez, Buenos Aires Province, Argentina
HBD Audio Revelations
22 Retief Pl, Carrington Heights, Berea, 4001, South Africa
Sarl Equip Auto
Pape'ete, French Polynesia
Audio Active
90 Bridport St, South Melbourne VIC 3205, Australia
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
161 Lavender St, Singapore 338750
The Experts Group Private Limited – B&W Millenia Boutique Showroom
9 Raffles Boulevard, Singapore 039596
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 Sharett St 29, Rishon LeTsiyon, 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
Kang Yong Company Ltd.
55/17-18, Phyathai Road, Thanon Phayathai, Khet Rajthavee, Bangkok, 10400, Thailand
SAIGON HI-END CO., LTD
8A Lý Thường Kiệt, phường 12, Quận 5, Hồ Chí Minh, Vietnam
Hi-Fi Magic
Kathmandu 44600, Nepal
Karma Digital Ltd.
Boryslavska St, 53, Kyiv, Ukraine
Digitalbild Sverige AB
Tellusvägen 9, 191 47 Sollentuna, Sweden
Big Bang
Šmartinska cesta 152, 1000 Ljubljana, Slovenia
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
Alfa Audio
Skopje 1000, Macedonia (FYROM)
UAB “A CAPPELLA”
Aušros Vartų g., Pasažo skg. 5, Vilnius 01304, 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, Trombitás út 26, 1026 Hungary
Exclusive Audio
Ioannou Apostolopoulou 59, Chalandri 152 31, Greece
Technology Science & Art
6 Allée Pier Jakez Helias, 77600 Bussy-Saint-Georges, France
AH-Hifisystems OV
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
ul. "Solunska" 39, 1000 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
Księcia Henryka Brodatego 3, Świdnica, Polen
HNNY
Venkelbaan 29, 2908 KE Capelle aan den IJssel, Nederland

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