Aluminum bonded fin heatsinks are the best air cooled heatsinks. The next step from bonded fin is liquid cooling. These heatsinks are available with custom CNC drill/tapped holes for our products. Contact us for custom requirements. (These heatsinks have already been face milled for a flat mounting surface, no additional surfacing is required)
Don't risk your $1,000 pallet amplifier with a used heatsink. These heatsinks are custom designed for our products. They are expensive but they work great.