First of all thanks to headphonezone for prompt delivery.
I spent hours with Fiio K5 using different set of headphones listing to wide verity of track in high quality and mp3s in 320 kpbs. Every time its was great, unexpected, exceptional sound quality with Sennheiser 650's. DAC i used Fiio X1 2nd gen, Fiio X5 3rd gen and Fiio K1 for mac.
The amp is working great and iam so happy
The DAP I use pretty much every single day is a FiiO X3 2nd gen and I had often wondered if the sound could benefit from a desktop amplifier. A couple of weeks of comparing specs and prices steered me towards the recently introduced FiiO K5 which Headphonezone got across to me in less than 36 hours.
It is always a joy to unbox a FiiO product. The packaging is superlativeand gives the impression of a very premium product. Inside the box there are the usual cables and connectors but not FiiO’s proprietary 11 pin micro usb connector. This means that you have only the option of docking your player and not connecting it via a cable so you can pretty much forget about putting a case on your player. The power cable lacks an earth pin and should definitely be replaced. An odd oversight.
The K5 itself is solidly built and feels unlike anything you could buy at this price point or even at three times the price. Build quality is the gold standard in desktop amps and I think we can finally lay to rest all the 'All Chinese products are flimsy' arguments. The large volume control knob is precise and oddly satisfying to operate. The gain and selector switches are metal as is the entire body of the K5.
The docking process itself is a bit scary for the first time user and it took me about 5 minutes to get it right. Luckily the micro usb connector on the K5 has a certain degree of movement and this makes the docking process easier.
I have used the K5-X3ii combination with the Sennheiser Momentum on ear and the Beyerdynamic DT990 Edition 32 ohm. Obviously, a good amp is supposed to add value to the sound without 'colouring' it and this is exactly what the K5 does. There is a noticeable increase in soundstage especially on the Beyers and an overall improvement in the listening experience. No two people hear exactly the same and obviously there will be varying opinions on any audio product. That being said, I couldn’t be happier with the K5 and would recommend it to any audiophile.