I bought a used Marantz 250 for $99 in approx 1996. It beat the socks off the Adcom GFA-535 I’d been using for the prior six years. When I later upgraded from the Marantz to a McCormack DNA 0.5 Deluxe, I could barely hear a difference. The main improvement with the McCormack is that it didn’t billow acrid smoke.