I did a few custom builds of my popular Sideman amplifier and added tremolo. Its not going to be a standard option, but I figured I would let the steel players know that it is an option.
The reverb and tremolo work on both channels - channel 1 is voiced for 6 string, and channel 2 has the Milkman steel preamp. Tremolo is a nice addition to an already versatile amp. Grab and go! The amp comes with a footswitch to control the reverb and tremolo