I need to find the right plug for my amp so I can use it at my work shop without the battery dieing. My 15v source is a  GS-PSA-153. The Meier Stepdance 2 will automatically use the higher amperage above 9v. I dont know where to buy the right plug.

  Im a true novice at the higher arts of good sound products. These low priced german made headphones are a real eye opener. Pardon the pun.   I have poor hearing... tone deaf in certian areas. These head sets really help, but I need more power in a reasonably priced amp. I use them mostly at...