Rocktron Widowmaker Guitar Preamp Rack Mount<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Controls include Level， Bass， MID， Treble and Gain in the HIGH GAIN channel， and Level， Bass， Mid and Treble for the CLEAN channel </span></li><li><span class="a-list-item"> In the HIGH GAIN Channel， the Level control determines the output level independent of the Clean Channel </span></li><li><span class="a-list-item"> The Bass control is used to determine the amount of low frequency information present in the High Gain channel， and is adjustable to + -15dB </span></li><li><span class="a-list-item"> The MID control in the High Gain channel is used to determine the amount of high frequency cut. Up to 30dB of mid-range cut may be applied </span></li><li><span class="a-list-item"> The Treble control is used to determine the amount of high frequency information present in the High Gain channel， and is adjustable up to + -15dB </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31O0GEvS17L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/21Dfvy0tkiL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/81zborJXVWS.png" noproxy>