Bartolini Bartolini 4.5AP Harness 2-Band EQ with PreAmp<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> The HR-4.5AP/918 uses a 2-band EQ and pre-ampTwo holes for Volume control: Volume (with Active/Passive push-pull switch) - BlendTwo holes for Tone control: Treble - Bass </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51zlko6WBiL.jpg" noproxy>