Professional Audio Test Tones for testing your Audio Systems Equipment. Test speaker frequency ranges to specifications. All Tones are Lossless WAV Format, 1 semitone files. These are Professional Audio Test Tones to be used with a connected Audio System. These test tones are NOT intended to be used through the device's internal speakers nor through headphones. Use only with your iPhone or iTouch when connected via the speaker connection jack or an authorized dock. Some of these tones may not be audible to each individuals hearing range."
