“This review is based on matching the Mini X with Hifiman He-500 Headphones. You may be reading this review, unsure what to make of this Amp, asking how can a cheap sub $200 amp offer the power needed for an expensive Headphone such as the Hifiman He-500? If you have done your homework you will find this is the stereo amp everybody is...” --fluidz
The "Caffeine Ultra" Amp is truely a high fidelity amp at the lowest price possible. It uses the amazing AD8397 opamp and two TLE2426 railsplitter to create the virtual ground. Furthermore, it includes two slide switches for gain and bass boost (8dB). Advanced customers agree: If this amp would be housed in a "commercial" enclosure the price could be raised up to $200!
UPA-200 represents a true breakthrough in audiophile-quality amplification. At last, a truly affordable stereo power amplifier that can satisfy the most discerning aficionado, and at the same, is affordable to anyone with a desire for real quality. Our advanced engineering and design techniques have resulted in an amazing new amplifier. Its rock solid performance and affordable price point...