I recently purchased this unit, along with speakers, making it the first audiophile system I've ever really owned. Unfortunately, I instantly noticed something wrong. Having also used headphones and a different computer, I'm pretty confident it has something to do with either the Peachtree or the USB cable I'm using, which is this: http://www.amazon.com/gp/product/B00004Z5T2/ref=oss_product. Could it be the USB cable, or maybe I setup something wrong? I turned the tube on, plugged it in, and that was it, assuming everything else was already in order.