MESA/Boogie - quality you know at a price you can now afford

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MESA/Boogie .50 Caliber Head - advert 1988

The MESA/Boogie .50 Caliber Head was a 50 Watt tube amplifier head made from 1987-1988, with a nifty 5-band EQ. This model was replaced by the .50 Caliber+ head in 1988 which had different switches and 6L6 tubes (versus EL-84s on the original 0.50 Caliber).