The
Palmer RIVER wupper is a
passive isolation box equipped with a transformer that prevents ground loops. The RIVER wupper was developed for guitar and bass applications, but its high quality sound characteristics make it equally suitable for keyboards and Hi-Fi equipment. The input (jack 6.3 mm) can be symmetrical or asymmetrical, the output (jack 6.3 mm) is always symmetrical, allowing cables to be routed over longer distances without negatively affecting the sound. The passive mode of operation without power supply makes the RIVER wupper particularly reliable and fault-tolerant, aided by the aluminium-steel alloy chassis.
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