This box is a great upgrade for someone looking to improve their stock of effects. Its not necessarliy professional grade like a Visual Sound or a Tech 21, but it definitely delivers high gain distortion needed to play any kind of metal. The only problems I had were there wasn't enough low end when I kicked one the top boost channel. I model my sound around the mids, similar to many punk bands and 80's metal, so having shrill highs in my sound pretty much just gives me a headache. I also found it time-consuming to dial in the right tone and gain I wanted. I also found that when I turned the volume down on my guitar it got really muddy sounding and lost a lot of clarity. I would keep it in my arsenal prmarily for stage use and practice since its not a particularly expensive piece and it is very durable and resistant to roadwear. But I would not use it for recording.