I wanted a "clean" preamp with some EQ adjustment, but enough "clean" output to make my magnetic acoustic guitar p'up usable in any amplifiers line input at a good level.
This does that job pretty well faultlessly. There is an extra potentiometer inside for even more (or less) signal output if you need it.
EQ works OK, but the EQ knobs also work like a volume control, cutting or boosting the output signal as I cut or boost the treble, mid or bass controls. With all EQ knobs central is the best setting for me.
Construction is feeble, stand on this once and it's finished, as the end plates with knobs & jack sockets are not secured good enough, leaving the circuit board to take your body weight. Saying that, there is only 3 or 4 components inside so a repair, or complete rebuild will not be a big job for the DIY'ers among us.
Rubber feet or belt clip are adhesive attached, not really good enough for this €100 price tag.
But it does a real good job of the boost & clean sound, so I will keep this one & avoid standing on it.
Still using it a few years later, still doing a good job for me.