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OJAS is the creative pen name of Devon Turnbull. As a university student studying Audio Engineering he started using the name across a variety of disciplines including graffiti, music, graphic design and clothing design. In 2003 Turnbull co-founded the clothing brand Nom de Guerre with Isa Saalabi, Wil Whitney and Holly Harnsongkram. For the next decade, while primarily working in fashion, the name OJAS was kept alive on sound sculptures Turnbull was crafting for himself and a growing number of audio enthusiasts around the world. With a particular interest in high efficiency speakers and low powered tube amplifiers, Ojas audio equipment aims to bring realistic, natural sound to the listener. These products are the result of two decades of experimentation, engineering and explorations in the audio underground.
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The Nature of Sound


Sound is considered to be of two kinds, one a vibration of ether the other a vibration of air.
The vibration of ether which cannot be perceived in the physical sense, is considered the principle of all manifestation the basis of all substance the “music of the spheres” it forms permanent numerical patterns which are the basis of the worlds existence, this kind of vibration is not caused by physical shock as are audible sounds. It is therefore called anahata “unstruck”, the other kind of sound is an impermanent vibration of air, an image of the ether vibration. It is audible and always produced by a shock. It is therefore called ahata or “struck”.
Struck sound is said to give pleasure. Unstruck sound leads to liberation (Narada Purana).

Collection: Media > Books

26 products
  • オーディオマニアのリスニングルーム訪問

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    9784416623176
    オーディオマニアのリスニングルーム訪問
  • 100 Years of Speaker Technology

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    $230.00

    100-YRS
    100 Years of Speaker Technology
  • Jazz Kissa 2014 Vol. 2

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    9784991049262
    Jazz Kissa 2014 Vol. 2
  • Western Electric Sound Vol. 1 & 2

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    WE-VOL-1-2
    Western Electric Sound Vol. 1 & 2
  • Jazz Kissa 2015 - 2019

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    9784991049279
    Jazz Kissa 2015 - 2019
  • Vintage Speaker Unit

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    9784880734569
    Vintage Speaker Unit
  • Full Range Unit Listen to the Dynamic Sound

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    9784880735108
    Full Range Unit Listen to the Dynamic Sound
  • Jazz Cafe Basie

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    9784880734484
    Jazz Cafe Basie
  • Vintage Analog

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    9784880735047
    Vintage Analog
  • 300B Book

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    9784889734460
    300B Book
  • Vintage Analog 2

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    9784880733326
    Vintage Analog 2
  • Tube Kingdom 101

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    9784880734675
    Tube Kingdom 101
  • Direct Heating Triode Book

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    9784880734798
    Direct Heating Triode Book
  • Treasure of Large Speaker 2

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    9784880732435
    Treasure of Large Speaker 2
  • Top Pick 100

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    9784880732824
    Top Pick 100
  • A Study of Vacuum Tube Amplifiers of the Past

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    9784880735184
    A Study of Vacuum Tube Amplifiers of the Past
  • Tannoy

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    9784880731940
    Tannoy
  • Tube Kingdom 106

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    9784880734866
    Tube Kingdom 106
  • Tube Kingdom 102

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    9784880734699
    Tube Kingdom 102
  • EL34 KT88 Book

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    9784880734644
    EL34 KT88 Book
  • Tube Kingdom 109

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    9784880734972
    Tube Kingdom 109
  • Tube Kingdom 107

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    9784880734880
    Tube Kingdom 107
  • Tube Kingdom 105

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    9784880734835
    Tube Kingdom 105
  • Tube Kingdom 108

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    9784880734910
    Tube Kingdom 108
  • Stereo Sound 223

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    9784880734811
    Stereo Sound 223
  • Tube Kingdom 110

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    9784880735023
    Tube Kingdom 110