The Dean Markley DM30RC Lead Guitar Combo has dual switchable channels—Clean and OverDrive—with separate controls for Clean Volume, Drive Gain, 4-Band EQ, Reverb, Chorus Speed, Chorus Depth, and Master Volume. Dean Markley’s eye catching design makes the DM Series amps look as good as they sound. Don’t let the compact size fool you, the DM30RC really puts out the volume. The DM30RC features a Footswitch Jack for remote channel switching to select from Clean or Drive Channel. An MP3—Stereo input jack, which is an auxiliary input designed for use with an MP3 player, tape player, CD player, etc. can be used for playing pre-recorded music. A Headphone Jack is also provided. This jack disengages the amplifier’s internal speaker for private headphone practice.