Very simple with few features but great value for money. Nice attention to detail e.g. including a small screwdriver to adjust the trim pots and set up is reasonably simple. It also sounds great. My only criticism would be that the instructions weren't clear on how to remove the lid and I spent ages trying to remove the screw on the back which I later found out shouldn't be touched! Luckily I couldn't get it to budge before realising my mistake. I probably should've read the instructions properly before attempting to mess around with it. Other than that I highly recommend this product if you're looking for a cheap, simple but effective pre-amp/signal blender.