Profile: Sieler Design Products is a provider of voice amplification products. We offer Voiceamp™ revel is a walk-around sound, with its body-pack design, weighs only 2 1/2 pounds and it has a comfortable headset microphone for close talking & with the use of the headset microphone. We provide Voiceamp™ 89 has 40 watts of power which makes it loud and powerful & it goes anywhere & comes with a horn for crowd penetrating sound & covers long distances while giving true, clean voice quality. Our brands include Voiceamp™.