Shure FP22 headphone amp - tested and working , I don't have a power supply so I used a 9 v battery ( not included in the sale ) and it needed a small piece of cardboard to make it fit snuggly , then I tested it using a mic into the mic input - it has a clever feature that it has a separate volume control for the mic signal ,which can pass through it ,and the stereo feed, so you can make your own mix ! will send to UK only
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