Seems like the Sisma (valve pre-amp, same power section) is the head that’s getting all the attention rather than the Coda, I couldn’t find any reviews or even other owners comments about the Coda anywhere in the world! As a stand-alone bass head the Sisma may well be the one to go for, but I don’t really see the point of pre-amps going into pre-amps, I was getting annoyed that the TH700 I had was colouring the Capo sound.
So the Coda was a bit of a punt but on the quality of the Capo I thought a safe enough one.