Ortofon Inc O-1
Closed-Back Studio/Monitor Headphones


Our Price: $199.00
List Price: $249.00
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The Ortofon O-One produces a balanced, reference-grade signal output.  Unlike other closed-back designs, the O-1 was engineered to provide a precise representation of sound without coloration or inaccuracies.  This design offers a transparent window into sonic purity and is revealing of not only the details and elements which comprise the signal but also any inadequacies or inconsistencies.

The addition of S-Logic™ facilitates a superior reproduction of the stereo field, as the drivers are positioned to fire towards the outsides of the ears rather than directly into the external auditory canal.  This effectively recreates the way that sound waves enter the human ear from outside sources*.
*NOTE: that S-Logic does not manipulate the signal itself, but only the method by which it is delivered to the ear.

This also allows the headphones to be driven at an optimally loud volume with less potential for hearing damage as the sound pressure level inside of the ear canal is greatly reduced by S-Logic™.

The O-One headphones are not only built to withstand repeated use and travel, but they are also designed with optimal impedance and sensitivity to allow for use with a wide array of equipment.  Since O-Ones can be used effectively with virtually any source equipment, even auditioning for reference on personal music players and other consumer equipment is easy and requires no additional amplification.

Included with the O-Ones are two sets of earcups (one of each pair, leather and velour) for long term wearing comfort.

Technical specifications:

  • Frequency range: 10 – 22.000 Hz
  • Sound pressure level: 112 dB
  • Impedance: 40 Ohms
  • S-LogicTM (Natural Surround Sound)
  • Weight: 295 g


Enclosed accessories:

  • Standard cable 3M with 3,5 mm gold plated jack
  • Coiled cable 3M with 3,5 mm gold plated jack
  • Jack adaptor, gold plated 3,5/6,3 mm
  • Extra set of ear pads in velour
  • Transport bag
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