Tam Valley MFJ003U DCC Mono Frog Juicer (polarity reverser for frogs) (Scale=ALL) TAM-MFJ003U

Worked right away. Easy hook up. If I run into any other frog powering issues, I will buy this product again.

Customer service was respectful and helpful when I called to check on my order.

wish I would of found them earlier,their great.