“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
“IntroductionHere I am with another amp review and this time, its of the Portaphile 627 MICRO with the stock OPA627s.Keep in mind that absolutely everything in this review is subject to the law of Your Mileage May Vary. A head's up, as this is going to be much longer than my other review as I had far more to test it with so here's a tl;dr. [[SPOILER]] Now that I've gotten that over with, time...” --BucketInABucket
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...
The Portaphile 627 uses three Burr Brown OPA627's, one each for the Right-Left-Ground channels. Each opamp is then buffered with two Burr Brown BUF634s per channel for a total of 6 buffers. This allows the opamp to work efficiently at powering your headphones regardless of being large high impedance headphones or small low impedance current hungry earphones. The OPA627 is widely considered...