Regarding headphones, it's always a good idea to invest in a higher quality pair if you're serious about your music. Sweetwater is a reputable dealer and they have a wide selection of headphones to choose from, so you should be able to find something that suits your needs. As for adjusting the mids on your Champion 50XL, I believe the process is similar to the Mustang 1 v2. You should be able to press and hold the "Exit" button and then turn the "Bass" knob to adjust the mids. However, I would recommend checking the user manual or contacting Fender customer support to confirm this. Overall, it sounds like you're off to a great start with your new amp and I wish you all the best with your musical journey! .
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