There are probably way more combinations to make than you'll ever use and the sound is good so at this price there aint much to complain about. However, Mooer really need to make updating firmware easier, updating the software on this one feels like being back in the 90's and it's not smooth at all. One tiny mistake, be it downloading for the wrong operating system, or just not selecting all the different files you need, or installing them in the right order, or in the right directory, you wont get the Mooer to update its firmware. This needs to become way more simple.