$72.46
See if it's really the one
Search with this product to compare it, find similar styles, or turn up something better before deciding.
Save on the TSI: Boost Passive Complete Set! Increase attention to speech and language! TSI: Boost Passive contains great music with sound concentrated in the “speech and language range” (750-4000 Hz.). Use the passive tracks over speakers as pleasant, unintrusive background music to enhance your sound environment, filter distracting sounds, and be entrenched in frequencies most significant for auditory processing. This product is available as downloadable (Zipped WAV) files or on Compact Disc (4 Discs). Please select your option above.
Have a question about this?
We currently ship within the US, with more countries coming soon.
Final cost and dates are confirmed at checkout.
🇺🇸 Ship from USA · On Agora since 2025
$72.46