WELCOME TO PRARL
John H. Brandt III brings over 50 years of experience and has designed more than 1,100 studios worldwide.
Partnered with Ron Sauro of NWAA Labs, a former NASA scientist and leader in acoustical standards development.
Collaborations with leading universities, institutions, and standards committees worldwide.
Low-frequency testing capability down to 20Hz, achieving sound pressure levels up to 142 dB.
Certified absorption and transmission loss testing following ASTM and ISO standards.
Industry-leading 360° diffusion and speaker directivity mapping, unparalleled in the region.
Testing services priced 30-50% lower than Western labs.
Compliant with stringent ASTM, ISO, and AES standards, serving clients globally.
If you are looking for a thorough conscientious acoustic designer who bases his work on sound scientific principles coupled with years of hands-on experience then John is your guy! John and I worked in many of the same trenches in Music City Nashville and I know from personal experience that he is an experienced competent designer, technician, engineer and craftsman who will do whatever it takes to help you reach your acoustic space design goals!
Publisher, Musician, Actor, Writer
I have known John for 12 years and have always been amazed at his talent and skills. I had the honor of working with John on a few jobs 2005 and 2006. I can truly say I have the highest regards for the man and his ability to do anything with craftsmanship and pride.
Studio Owner
PRARL is a dedicated testing facility that thrives on precision, research, and collaboration. We help clients validate products, push research boundaries, and tackle unique challenges in sound science. If your work calls for expert testing or a fresh perspective on acoustics, let’s connect and make it happen.