When I plug my Fuzz Face style pedals into my 1990's Marshall 1987X, I expect to get some sweet, Hendrixy tones. But instead I get the exact opposite. Instead, I get very shrilly, high-treble, and tin-can like Fuzz tones that just aren't doing it for me. There's nothing wrong with the amp by no means. I just can't dial in a good, warm Fuzz tone. It's even worse with Tonebenders as they make the Marshall sound like a swarm of pissed off bee's inside a tin can. The tone is just so unsatisfying, Fuzz Face or Tonebender, that I immediately unplug the Fuzz and go clean. I typically play through Fender amps such as Tweeds and Blackfaces. I'll just plug a Fuzz Face or Tonebender into those and away i'm off, being pleased with the tones I get right off the bat without any tinkering. What could I be doing wrong with the Marshall? How can I achieve those warm, Trower and Hendrix Fuzz-tones with the Marshall?