“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
“ I bought this amp on EBay, and got a good deal. It's a nice looking, albeit small, tube headphone amp that uses a pair of 12AT7/ECC81 tubes. The "Headphone" is very cute, and with some headphones, it was outstanding. But it is a VERY warm sounding tube amp. It's maybe the most tubey, "syrupy" tube amp I have ever heard. With headphones that are already a little warm, like...” --Skylab
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...