the last setup i make it out now is that it really grabs the battery operation really nicely and it can require a touch up of course. i put the high output mini jack gain setting on and it turned out that the window setup allows the player with the option setting to grab the window flow cleanly and carry with the phones cleanly also. its hard to do that with a smaller player with a smaller battery. moreso, the placement of 3 tapering and 6 tapering in sequence allows in a taxy sort of way for the amplifier to carry the gain and power through almost like any certain setup might make up to when dealing with exactly this sort of thing to notice and certainly empirically make prime manipulation about. this setup in other words really works very fashionably with the player capability (Sony zx-507 walkman).