Came home yesterday to find my new (used, in like-new condition) Raven Labs PHA-1 waiting for me on the doorstep. This is a great little headphone amp to practice with. First off, the tone is very clean, second, there is no hiss to be heard. With a little boost of the bass on the three-band eq, my Warwick sounded great. The ability to attach my Discman to it, along with the left and right mix volumes is a really nice feature - great for transcribing songs. I'm definately glad I picked this up.