The K3 Pro is a stunning earphone, especially considering its more modest asking price. Among earphones from TFZ, Simgot and more household brands like Shure and Westone, the K3 Pro is undoubtedly one of my favourites. The all-aluminium construction is impeccably finished, ergonomically styled and feels nothing but rigid in the hand. The K3 Pro’s are available in two colours, silver and grey as pictured in this review. Both are striking though the grey model is arguably more distinct. A few users have mentioned QC issues though I did not notice anything like that, rather, the K3 Pro has one of the nicest constructions I’ve seen around this price.
Utilising the typical monitor style housings, the K3 Pro is reminiscent in shape to earphones from Shure and Westone as opposed the more atypical TFZ King, Simgot En700 and Oriveti Basic. But manufacturers adopt this design for a reason and through this tried and tested form factor, the K3 Pro achieves fantastic ergonomics that put their rather awkward competition to shame. Considering the triple driver configuration housed within, the earphones are compact, smaller than the SE215 for instance, and their low-profile fit and replaceable cable makes them ideal for sleeping. As such, they sit deeper in the ear and avoided forming hotspots during my usage. The inner face is absolutely smooth with a perfectly angled nozzle integrated into the metal housings. The nozzles are quite long enabling a deep fit, and are of wider bore; CP100 Spinfits just fit with some stretching though wider tips like the JVC Spiral Dots are more suitable.
With an over-ear fit, the K3 Pro’s proved to be very stable during use, easily staying put during exercise and general daily commute. Due to the presence of two small vents on the outer face, they aren’t the most isolating earphones, though they suffice for public transport. Foam tips do improve isolation and they may be just adequate for air travel with noticeable volume increase. Long term comfort is also good, the earphones are well shaped and will suit those with smaller ears. They aren’t quite as comfortable as the exemplary Oriveti Basic’s with mild discomfort forming at the back of my ears during extended use. Still, they are one of the most ergonomic earphones I’ve used around this price.
The K3 Pro has a removable cable using the traditional MMCX connector allowing for countless aftermarket options should the stock cables be unsatisfactory. One thing to note is that the K3 Pro has very loose MMCX connectors. While sound never became intermittent and the cables never accidentally detached during my usage, the earphones may be more prone to these issues later down the road.
Two cables are included from factory, a remote cable and audio only cable. The remote cable is honestly pretty cheap feeling, very plasticky with far too much memory for my liking. Though it will do in a pinch, this is obviously not how the K3 Pros were designed to be experienced. Luckily, the audio-only cable is far more pleasing, perhaps not as much as the braided cables on the King and En700 though those units are non-removable in return. Instantly, the silvery audio cable is more catching with a lustrous internal braid. All connectors are beefy with great strain-relief that puts many more expensive earphones to shame. The actual wire is reasonably ergonomic with a smooth texture and a decently supple feel. The cable conforms to the user with well-shaped heat-shrink ear guides that are easily more favourable than memory wire. The right angle plug is low-profile, easily fitting within my phone case. Acoustically, the silvery cable has a drier midrange and more sub-bass snap, high frequencies are a little unrefined. Cable swapping is not an economical way to adjust the K3 Pro’s sound though those with a few MMCX earphones may want to give cable swapping a go as they response reasonably well.
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