MRI-Compatible Insert Earphones - Model S14 - $1900

Features

• High-Quality Audio over 0-10 kHz Bandwidth
• Output Levels in the Ear Canal up to 110 dB SPL
• Sound Attenuation from Insert Foam Plugs
• Uses Replaceable Foam Tips
• Easy to Set Up and Use
• EQ Filtering Software for Windows XP/Vista/7
  
  

The S14 insert earphones provide high-quality acoustic stimulus delivery while attenuating scanner noise. They are small enough to fit within any headcoil, and can be covered with circumaural muffs for added protection if the coil allows. Replaceable Comply(TM) eartips ensure sanitary conditions.

Frequency response equalization is achieved by pre-filtering stored digital stimuli. Equalization filters are provided and can be used either within Matlab or with a stand-alone filtering program (provided). A small power amplifier is required.

Model S14 System Includes

• Binaural Earphones with 0.5 Meter Cables
• 9 Meter Cable
• Small Transformer Box
• Custom Digital EQ Filters
• EQ Filtering Software
• High-Impact Carrying Case
• 6 pairs of Comply Foam Ear Canal Tips

Additional Information

S14 Instructions (PDF)

EQ Filtering Program Instructions (PDF)

MRI Insert Earphones - Technical Note on Attenuation (PDF)

Sample Frequency Response (PDF)

S14 earphones are currently in use at these, and other, research institutions:

Martinos Center, Massachusetts General Hospital
Boston, Massachusetts USA

Medical University of South Carolina
Charleston, South Carolina USA

The Donders Institute for Brain, Cognition and Behaviour
Nijmegen, Holland

University of Melbourne
Melbourne, VIC, Australia

Massachusetts Institute of Technology
Cambridge, MA USA

The National Institutes of Health
Bethesda, Maryland, USA

The University of Washington
Seattle, Washington USA

University of California at Irvine
Irvine, California USA

Northwestern University
Evanston, Illinois USA

University of Oldenburg
Oldenburg, Germany