I've had the 5150 iii 50 watt head for a while now. I've actually owned different versions of the 5150 iii over the past 10 years or so. I sell them but always come back to them. A few weeks back, I plugged in and absolutely hated my tone. It was so hairy and fizzy with a mid-range bite I couldn't dial out. Some people love this amp, and I did for so long. I just don't enjoy anymore. Has this happened to you? If so, what amp?