“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
“INTRODUCTION The V-MODA VAMP VERZA DAC and amplifier is only about 1/4 inch in each dimension larger than an iPhone 5, yet provides a novel and useful method to attach to the iPhone as a single unit and provides excellent sound in a shirt-pocket-sized stack with the iPhone in the V-MODA Metallo case, particularly with the V-MODA M100 headphone for which it has been tuned. ...” --ruthieandjohn
“ So my Impressions: Introduction I have said before, I am against selling what you win or are given, and I am not an apple fan, and have no interest in getting an iPhone. So what was I to do with the VAMP I just won? Well the original idea I had was to give it to my mother to troll around with with her K550's. But it seems fate had other ideas, my friend, helped me win...” --WiR3D
“ ****Note**** As always, these are strictly my opinions. I try to present these products as honestly as possible and try to describe them as best as possible. As always, YMMV. ****NOTE**** FISCHER AUDIO MYSTIFY PORTABLE HEADPHONE AMP SPEC’S: Frequency “flatness”: +/- 0.5db Dynamic Range: 110 db Total Harmonic Distortion: 0.001% Intermodulation...” --LFF
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...
Frequency range: 10Hz-20kHz Amplitude-frequency responce (AFR) irregularity within the frequency range: 0.3 dB Dynamic range: 110 dB Harmonic distortions: 0.002 % Intermodulation distortion (CCIF) 0.006 % Interpenetration of channels at frequency 1 kHz: -73dB Rated input voltage: 0.5 Maximalinput voltage: 3.5 V Maximal output voltage at the non loaded output: 10 V Maximal undistorted power...