GoVibe products have come a long way, thank God. Remember theÂ Hippo Box+? Rife with mis-labelled parts, a broken website, and costing a pretty penny for what, essentially, was just a battery box, it was embarrassing. It sounded good, though, and therefore got away with a TAP. Today, GoVibe, together with its cheaper Hippo branch, is generally a badge of quality. The VestAmp+ is a high-performance headphone amp with a 24bit DAC thrown in for good measure.