Fosi Audio Q4 Mini Stereo DAC & Headphone Amplifier, 24Bit/192KHz Optical/Coaxial to RCA AUX, Digital-to-Analog Audio Converter Adapter for Home Desktop Powered Active Speakers

Product Information

The bass and treble knobs do offer a LARGE amount of adjustment (estimated +12 dB), but I wish there was a "zero" setting marked for reference. I do not own any products with optical or coaxial output, so that part will not be part of this review. Another great feature of this particular headphone amp is that it comes with a variety of interfaces.

The DAC (digital-to-analog converter) technology can bypass the built in DAC amp of your phone to deliver better quality sound. It can process 192Khz / 24 bit PCM from coaxial and optical connectors, and it also has a USB input at diminished bit rates.This is a review and detailed measurements of the SMSL M500 Balanced DAC and integrated headphone amplifier. Let me start off by mentioning power, as this little device claims it can output 1W at 16 Ohms, which is a lot of power for such a small device. I found that most of it’s drawbacks are largely due to me being spoiled by bigger amps, and it also proved to me that even a small DAC can still synergize with the right equipment and bring a lot to the table. This headphone amp features 4 stereo channels which can be controlled independently from each other. Before getting into the review, I have to say that I was surprised at the details that Fosi share about the product.

This makes it easy to transport around with you so you can listen to high quality audio wherever you want to.My finding was the dac for the culprit as even hooked to a known quality (comparatively) amp it had the same undesirable sound signature.

To find the best headphone amp you will need to know what impedance your particular headphones have. I want to thank Fosi audio for the sample of the K5 pro, as always this is my opinion on it and I've not been paid or influenced by anything other than the music. It can be used as a preamplifier or volume control for PC/MAC/Computer with bass and treble controls.For comparison's sake, the JDS Labs Atom claims 1W at 32 Ohms and that is an amplifier that I very rarely need to push above 50%.