Hi! I have a Rob Allen Mb-2 fretless, it's a great bass. I've tried it throught Walter Woods Ultra because I really like that amp but I don't find a great tone, It's a pity because the WW sounds great with other basses and in particular with acoustic bass or double bass... Why so? Do you think WW is a good amp for fretless bass? Have you ever tried Rob Allen fretless throught WW? Someone told me that there is a difference between channel 1 and 2 but I did not hear any difference.