• Stereo Earbuds (in the ear) or Stereo headphones (outside the ear)
• Frequency range: 40 Hz -20000 Hz
• 4' to 6' cord (to allow a comfortable range from your stereo equipment of choice)

Optimal headphone quality:

• Stereo Earbuds (in the ear) or headphones (outside the ear)
• frequency range: 20 Hz -22000 Hz
• 4' to 6' + cord with a portable CD player (for superior audio quality and the freedom to listen wherever you choose)

Some notes on speaker types and signal processing (plus what to avoid):

Many headphones can be manufactured with speakers that are engineered specifically to blast out heavy bass frequencies without distortion. Try to use headphones that are not attuned to a particular style of audio (whether deep bass or high frequencies).

Headphones, home stereo or media players may also feature enhancement that can disrupt the BrainEv's intended signals. For best results, always insure that no additional signal processing is being applied to the original source audio.

Keep your audio setup simple. If your audio configuration allows additional effects, make sure those options are disabled, before using the Brain Evolution System. In the event that any audio processing can not be disabled, make use of an audio device that is free of  these extra features.

Audio processing technologies to avoid include, but are not limited to:

• Bass boosting technologies such as XBS, loosely titled things like "Mega Bass", "eXteme Bass" and the like.

• Audio effects like echo and chorus

• Reverb or environmental simulators like "hall", "cathedral", "room", etc. that change the overall sound characteristics of audio

• Noise cancelling headphones.

In almost all cases, a standard simple set-up (like a portable CD player with some quality headphones) is all you need to get top results and comfortable use out of the BrainEv.

Our suggestions are: be savvy, read your packaging, and put questions to informed retail staff that truly know their audio! With the variety of technology out there, one never knows what they are getting, and it’s our job as consumers to get all the info we can without getting confused or hoodwinked...  A tough job, we know!

If there's any way we can help, with any audio confusion you might face, drop us a note and we'll do what we can to help you pick the right equipment with the right settings.