"Perhaps the best way to sum up the Studio Quad is as the 'Burger King' of effects units: if you want four simple studio effects in one box, you've got it; if you want almost instant gratification when it comes to editing effects, you've got it; and if you want to concentrate all the unit's power to give you one big studio‑quality stereo reverb, you've got that too. The Studio Quad is an effects unit that virtually anyone can make use of straight away, yet it'll take a long time to grow out of. Digitech definitely have the right idea." Sound on Sound Magazine