MESA/Boogie Mark V
http://www.mesaboogie.com/Product_Info/Mark_Series/mark5/mark5.html
Here's a demonstration of the drier, raw, cutting British gain available the EDGE mode in Channel 2 of the Mark V. Moderate settings of the Gain control will deliver genuine classic rock sounds from the '70s while Gain set higher adds body, bloom and vintage saturation to an incredibly fast, tight and brighter Gain range. The EDGE mode thrives on being turned up to deliver ridiculous Bass punch. Playing this mode on 10 watts or... 45 or 90 watts, and Cranking the Gain, Master and Output is HIGHLY recommended!
Played by Michael Taylor through the bridge position humbucker of a Les Paul Custom into a Mark V head and a 2x12 Rectifier cabinet. Mic'd with a Shure SM57 and a Sennheiser 421.