I bought this with the T20U from Item Audio UK and it just lifts the little Tripath amp to a whole new level. It also looks really cool in a stack with the PSU! I've also tried it with other Tripath and conventional solid state amps and it's an amazing preamp for the money. It benefits from a good power cord, though, to reduce the noise floor. Absolutely no complaints at the price, though.
KingRex Pre-AMP has a hybrid design that improves on conventional voltage amplifiers with discrete components and high-performance op amps. It features two sets of line inputs with auto-select.
The KingRex PRE-AMP shares the same aluminum faceplate, the same volume knob and the same chassis measurement of its sibling. The cabinet is of a rigid construction with elegantly appearance by the size 180 138 45mm with 6mm thick aluminum face plate which with polished sliver chrome volume control knob in the middle. The stylish design with the tiny size will bring fun for life. It also contributes to the touch and fell factor and is essential for the long lasting life even in a tough environment.