I broke-in during the 70's when Mac was making the most durable stuff ever and was actively marketing solid state gear. Their well-deserved reputation for quality-at-a-price was built on their still very desirable tube products. IMO that old Mac tranny stuff is still cosmetically cute and will probably last until the big flood, but they sounded like a can of nails when we put them on DQs or Maggies. Hard to deal with that dichotomy. Mac was at least smart enough to re-introduce tubes. The guy I worked for used to love to run 4 ESS Heil III's on a 2105 thru a C28. Miracord changer with a Shure Type IV! "Dark Side of the Moon" had just come out and the owner loved to demo the system at hi volume. When he first played me "Money," I nearly lost my little neo-audiophile hearing! Can of nails!