I love Acoustic Image combos, I'm on my 4th, which is a 2 channel Coda with removable head.
As I play several gigs where I plug direct into P.A. or house bass amp I started taking the Clarus head to use as a pre amp, which means I ca have full control of my sound.
It doesn't weigh much but it's too large to fit in a gig bag so I started looking at alternatives and ordered the Fishman Plat Pro. That didn't sound as good, in fact it was disappointing.
Anyway, to cut a long story short I ordered a Clarus SL-R from Laurence at Acoustic Image U.K.
I love it! It's tiny weeny, weighs next to nothing, has built in reverb etc (great for fretless or EUB), 600 watts but most of all sounds amazing.
I've used it just as a pre-amp with my Eminence upright (Fishman Full Circle) & Rob Allen Mouse and have been very pleased with the results.