our locations

United States of America
Listening Matrix is located in Southern California-Los Angeles-Studio City in the Colfax Meadows area between Colfax and Tujunga and between Ventura Blvd. and Moorpark St.

On Tour
From time to time Ms. Koldenhoven presents her sonic therapy workshops, listening evaluations, and private sesions nationwide. Contact us to be added to her notification roster. For assistance in brining Ms. Koldenhoven to your area, please contact our main office.

postal address

Listening Matrix
4234 Irvine Ave,
Studio City, CA 91604-2919.
Telephone: +1 818 980 2840

Please contact your local emergency room for any medical emergency.


Contact Founder and Sonic Therapist Darlene Koldenhoven for more information or to set up a free 10 minute personal consultation.


Note: Renting the Integrated Listening Systems iLs Rental Equipment requires the certified practitioner's ID.



Our Departments

Main Office, Appointments, Customer Service:
Telephone:+1 818 980 2840
Email Office Here
Darlene Koldenhoven:
Telephone: +1 818 980 2840
Email Darlene Here
iLs Equipment Rentals:
Telephone: +1 303 962 2535
Email iLs Here