Not every boost is created equal and the Caroline Icarus Boost is no exception. With an available adjustment for capacitance, the Caroline Icarus Boost draws the line between "clean" boost and "plain" boost.
From Moog's new line of MiniFooger pedals-- the MF Boost is an Expression enhanced, twin topology boost pedal that allows you to select between an articulate VCA signal path and a colored OTA signal path.
MXR and Bob Bradshaw present the MC-402, a CAE Line Driver with an overdrive built in as well. The CAE Boost/Overdrive features the transparency of the Line Driver coupled with warm overdrive, from bluesy crunch to screaming lead!
The Wampler decibel + Buffer/Boost is an original circuit designed to improve your tone everywhere in your signal chain. Place the decibel + first among your effects with zero gain for a transparent buffer, or at the end for a perfectly clear boost.