I dont have the good head phones, but I have a pair of Sony stereo headphones that seem decent quality. they are not amplified. I can not tell the difference in any tones at all in AM mode, and I can hear the tone very well and clear. I can get a pretty good idea of the depth and size of targets, but when I hear people talk about identifying metals with the sound im lost. I have the Vaquero. i have done tests with regular quartes and dimes and silver ones and notice no difference in the tone in am mode or the beep in disc. mode. Any advice? do I really need the good head phones to hear the different tones of different metals?