Palmer PAL-PTRAVE Passive Re-Ampflication BoxReamping is a valuable recording technique used by many sound engineers. It lets you experiment at leisure by running guitar, bass, keyboard, drum and even vocal tracks through amplifiers and effects pedals. As with many other techniques, you need the right tools. The Palmer trave is a passive reamping box that requires no external power supply. Inside is a specially developed transformer that converts the balanced line signal into an unbalanced Hi Z