Mesa Boogie Mark IIC+ HRG Tube Amplifier Head, Black Bronco/Wicker GrilleIn the long, long legacy of the legendary brand, few models have had the kind of influence that the Mesa Boogie Mark IIC+ HRG Head did. A favorite of many a high gain guitarist in the '80s and beyond, today's Mark IIC+ HRG captures the essential essence of Mesa tube excellence for the ravenous players of today. The mid '80s was a magical time for high gain tube amps like Mesa Boogie's. After a number of successful builds, Mesa's Mark I "HRG" model