Tweed Champ 5F1 – Mercury Magnetics Transformers Upgrade Tweed Champ 5F1 – Mercury Magnetics transformers Upgrade Mercury Magnetics Power and Output Transformers will improve the tone of your Tweed Champ with a better low end, higher dynamics, more sustain but still with a great vintage style tone. Read More Share this:FacebookTwitterTumblrPinterestLike this:Like Loading...