I recently bought a Mcintosh C28 preamplifier on Ebay. It looks pretty original from the pictures (original caps, etc.). I like restoring vintage gear, and would like to upgrade it while keeping it as original as possible. I can see a lot of information on the C28 on Audiokarma, but in many different posts. My goal is to present the work being done on this amplifier, get some help from the community, and insert some links to the best resources I can find as I progressively upgrade this old gear. My plan is to: - replace the capacitors, starting with the power supply - hopefully restuff the large cans if I can -, then move on to other electrolytics, and finally mylar caps. - replace power transistors. - clean and lubricate all knobs and pot - replace the broken glass - replace the light bulbs with LED - repaint the scratched top cover - replace all RCAs with gold-plated ones The C28 is on its way somewhere on a Fedex truck, it should arrive in the next couple of days. In the meantime, here are some pictures from the Ebay auction.