Sennheiser HD500A Headphones

Features:

  • In addition to being very high quality headphones for general listening, HD500A headphones have been designed specifically for use with Therapeutic Listening® music albums.
  • Two-year warranty provided by Sennheiser
  • “BioNetic” design offers comfort for children and adults
  • Padded, adjustable headband
  • Supra-aural, open aire design
  • Improved audio technology (see features & specifications below)
  • Sennheiser patented dampening element for controlling diaphragm oscillation
  • Duofol diaphragm to reduce standing waves
  • Computer-optimized magnet systems minimize harmonic and intermodulation distortion
  • Detachable, 9.8-foot single-sided OFC (oxygen-free copper) cable
  • Fully modular parts for easy repair
  • Fresh, balanced sound and powerful clear delivery of higher harmonics
  • Soft velour ear cushions
  • Vinyl replacement ear cushions available from Vital Sounds

Specifications:

Frequency Response: 18-30,000 Hz
Transducer Principle: Dynamic
Nominal Impedance: 150 ohm
Characteristic SPL: 1 kHz 102 dB
Total Harmonic Distortion: < 0.1%
Ear Coupling: Supra-aural semi-open aire
Weight (without cable): 7.35 oz
Connector: 1/8″ stereo jack plug with adapter to 1/4″ plug
Connection Cable: 9.8 foot detachable single-sided OFC (oxygen-free copper) cable
Ear cushions: Velour

Background:

In addition to being very high quality headphones for general listening, Sennheiser’s HD500A headphones have been designed specifically for use with Therapeutic Listening® music albums. This model features a combination of features and elements from two consumer Sennheiser models (HD500 and HD590), plus modifications to the specifications. The outer shell is identical to that of the HD500, with its supra-aural, open aire design, sturdy construction, and comfortable fit for children and adults alike. The electronic components inside the HD500A contain slight modifications to Sennheiser’s HD590 model, selected for its harmonics and frequency response. The ear cushions are velour like the HD590. See table below for a comparison of the different Sennheiser models.

Technical Comparison

HD500A

HD500 HD590
Frequency Response 18-30,000 Hz 14-21,000 Hz 12-38,000 Hz
Nominal Impedance 150 ohm 32 ohm 120 ohm
Total Harmonic Distortion < 0.1% < 0.2% < 0.1%
Ear Coupling Supra-aural, semi-open aire Supra-aural, semi-open aire Circumaural, open-aire
Ear Cushions Velour Vinyl Velour