Knowledgebase: Product Questions
What's the difference between the DSP and the GRS Neurophone models?
Posted by Jorah Lafleur on 19 November 2008 03:32 PM
The Neurophone DSP model is the 8th generation of Dr. Patrick Flanagan's famous Neurophone. This model uses an ultrasonic wave as a carrier for the audio signal which is delivered through alternative pathways to the brain.

Unlike the previous models which used high voltage, the ultrasonic carrier on the DSP delivers exceptional sound quality. You have to hear it to believe it.

The DSP model has an input where you can plug in an iPod or CD player for better learning retention than 'listening' through the ears.

It also has a setting for 'pink noise' which uses an internal oscillator instead of an external source. This may be helpful for relaxation and these were the tones used for energetic balancing before Dr. Flanagan developed the GRS Neurophone.

For in depth information see our Neurophone website at

The Neurophone GRS uses the same type of delivery system but instead of having an input jack where you can plug in an iPod or CD player it simply runs a series of Golden Ratio Series tones. The GRS is based on the Golden Mean or Phi ratio which is predominant in nature.

Using the GRS model may help balance the brain biochemistry but the units can only be sold as a frequency generator for research purposes. Some users have reported children who used the GRS had improved learning retention using it while studying.
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