There are many boost pedals out there but this one is all-tube, not solid state. I compared it with an other solid state boost pedal and I believe I could hear a significant difference. Of course, it's all-tube. There's no diode-clipping. It's a high voltage pedal (which I read in reviews is better) and the foot switch is very smooth without hard mechanical clicking (everything helps!) and the tone controls, also, are all-tube (or valve). The only 'complaints' I have is that it's buffered bypass not true bypass and the tone control knobs don't have a middle detent but these can be considered minor details. No big problems. It also has a high and low output depending whether one connects it into a tube amp or into a solid-state amp or pedal respectively. And it includes a power supply. So, one can plug and play immediately! The looks and build are very good, too. And the tube lights up. To conclude, I searched for a number of boost pedals and actually didn't find that many that are all-tube. Blackstar is a quality brand and that convinced me to buy this one and I don't regret it one bit.
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