REVIEW: Seymour Duncan's Twin Tube Classic Overdrive

It's the holy grail of the armchair guitar-god isn't it? –– an overdrive pedal capable of producing searing, creamy, tube-driven distortion reminiscent of the great classic amp heads, but at a reasonable price-point and with a small footprint. Add in a dose of seriously sturdy construction, dual overdrive channels, military-grade vacuum tubes,…