See specs on the MB site, as habituuuuude!

UTILIZATION

The setup is simple: we turn the knobs, there is roughly the sound a tuning, adjusted, and final sounds. It makes so faithful instrument: if it sounds cardboard box, if it is beautiful wood sounds beautiful wood.
It is not for nothing that Alain Caron, Hadrien Feraud and many others chose MB!

Conclusion: Apart rockers of all kinds, forget Ampeg!! See MarkBass, Aguilera et al ...
(I have nothing against Ampeg a priori, but it's Rock!)

SOUNDS

I chose this Markbass Big Bang, it is because it is supposed to be a little warmer than others (Mini Mark III), while remaining all transistor. But the signature sound remains the same. Sounds of the fire of God.

OVERALL OPINION

I use it for 6 months. I know a VERY good bass player that uses another MB, different model with a 15pouces with a Fender Deluxe JB 2002 single instrument that kicks ass (lucky?). So I followed the process and it sounds ... Simply. (But I play on a Mike Lull, not a Fender)

All that to say that there is nothing ... fault!