“I use it with optical input and it is fantastic. The sound is quite neutral and can match with any sort of headphones and IEs. Through the USB input, the sound is less dynamic and microdetail is a bit inferior. The tube get really hot if you turn it on for days, but you can take it away if you don't need it. Included power cable didn't work at all. I got one with $3 at local...” --Headfire
“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
STEREO PREAMP/DAC/TUNER WITH INTEGRATED AMPLIFIER https://emotiva.com/products/amplifiers/pres-and-pros/ta-100
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...
This standalone headphone amplifier is for the absolute head-fi'ers. 6J1 tube output, compact size, with hand wound Oxygen Free Cooper transfomer. Made by Yaqin Audio in China, who has been Grant Fidelity supplier and great personal friends with us for 5 years. There are quite a strong following of Yaqin tube audio products online. Grant Fidelity re-brand this product to a Grant...