“ This review describes version with OPA209, but other ones should perform on par or better and probably without GSM noise issue. The amplifier is powerful enough to drive power hungry headphones such as orthodynamics, but also has very low impedance for balanced armature IEMs. DAC, while very good, is not the absolute benchmark - but that is to be expected in an integrated device....” --AstralStorm
“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
“ Please see my full review here: http://www.head-fi.org/forum/thread/539012/review-leckerton-audio-uha-6s-usb-toslink-dac-amp I have rarely been so enthusiastic about any product as I am about this unit. I can't recommend it too highly. The brand deserves much more name recognition than it is getting. These should be on the short list for anyone looking for a portable amp. ” --sbradley02
“ I've been ranting too much so I've put every time I slipped too far out off topic into quotes. That way you can pass it all and just read a real review if you don't want to be bothered by some #my-life kind of content ^_^. and there is a short +/- list at the end if you really just want answers. Quote: Obviously we don't all seek an amp...” --castleofargh
“ ****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
“ I started looking for a headphone amp, to improve the Sennheiser IE8's, but mostly for the anticipated delivery of my Unique Melody Merlins. After thorough reading it came down to either the Pico Slim, Headstage Arrow 4G, ibasso T5 or the Leckerton Audio UHA-4. The Pico Slim was a bit too expensive for my taste, the Arrow to be a poor performer sound-wise and the ibasso T5 had a...” --ValentinHogea
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 UHA-3, now discontinued, is a USB DAC and amplifier combo featuring a two-position gain control, rechargeable battery, and all-aluminum housing. Feature Summary Rechargeable battery, charged through USB 1/8″ analog input Automatic input selection Two-position gain select (+0dB/+18dB) Cirrus Logic CS4344 DAC 16-bit/48kHz USB digital audio Output driver...
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...