Dennis Williams, Joan Martin requested info on voice amplifiers and microphones. The ones Barbara found best was the Voicette amplifier with a head wrap-around mike. Both from Luminaud 1-800-255-3408. I'm sure you can request a catologue. I think the amplifier, with a different microphone was $255, and the new mike was $65. Barbara tried the Radio Shack product for around $50 but found the clip on mike did not pick up her voice and the distortion was severe. Good luck.