We are the leaders and innovators in the voice amplification field. Our design and materials set the standard for the industry.

We make everything by hand in Gardena, California, USA. Each unit is quality tested at 10 different points along it's assembly. Our cases are made of 3/8" Luann Mahogony plywood, chosen for it's strength, durability, and resonance.

We stand behind all of our work with a 5-year quality gaurantee against defects in either materials or craftsmanship.

The cornerstone of our business is communication. We seek to enhance communication between speakers and listeners through providing the finest quality voice enhancement devices available in the world.

You will simply not find a better product, either in quality or value, than ours.

If you would like to place an order by telephone or have a question with regard to anything, please call us at (888) 826-4935, Monday through Friday, 9am-5pm P.S.T. from anywhere in the United States or Canada.

We may be reached by mail at our California Manufacturing plant:
Sieler Design Products
1310 West 130th St.
Gardena, CA 90247
USA