This is a new-production input preamp PCB for the McIntosh MC2100, MC2105, and MC2300 power amplifiers. This board closely follows the original component layout, and no changes were made to the original circuit design.
Here are the main differences between this board and the original:
- 2 oz. copper with a gold finish (ENIG), plated through-holes, and matte black soldermask
- Silkscreen reference designators and symbols on both sides
- All component footprints are sized to fit the original parts. In addition, all axial electrolytic capacitors have footprints for radial parts of various sizes, both input film caps support two different lead spacings, and both electrolytic output caps can be substituted with film caps of the appropriate physical size. A capacitor sizing guide is included
- Robust wiring turrets replace the original hollow posts that wires are soldered to