What is the fine-grained topic of the following text: With this classic pedigree in mind, it's easy to see why Whirlwind's new Rochester series of effects (which features Distortion+ and Dynacomp style boxes as well) strikes so close to the mark in recreating that classic old-school MXR magic. Only return the topic.
Whirlwind's new Rochester series of effects recreating MXR magic