“I think the Blue Tube unit improves the sound
of Hammond clones by adding some tube warmth, depth, and punch.
It also makes it possible (though not necessary) to add some of
the desirable aspects of tube based overdrive to your sound.
Considering the comparatively limited expense of the unit, I
think adding such a device to your rig is a cost effective way to
improve its sound.”
What is a Hammond clone?