"My own humble opinion is that the Ultrem is a 
device for a key instrument. This because of the 
fact it's in stereo; keys are amplified in stereo 
whereas guitar players don't often amplify in 
stereo. Most guitar players will find the tremolo 
of the Empress much nicer and more useful. Also 
because of the tube setting. By the way, the 
Empress is also excellent for keys. The Empress 
gives the lover of freakwork a nice deal with it's 
8 wave patterns to choose from. We decide to keep 
jamming for the rest of the test session. After 
all, there are a few things as funky as a nice 
Fender Rhodes. With a tremolo of course."