A:AnswerSomething like this should work just fine:
http://www.bestbuy.com/site/dynamic-vocal-microphone/8427188.p?id=1182557417672&skuId=8427188&st=categoryid$pcmcat152100050038&cp=1&lp=1&CMP=ocss_insg
On http://www.bestbuy.com/, it's Model: SCR10S SKU: 8427188
A:AnswerIt does plug into the wall, but it is not listed to have pitch control, only echo. If you'd like to contact the manufacturer about the software you can do so here: http://bit.ly/17zgujm