The K7XX is a good sounding headphone and a great value for the price. The bass and midrange are its biggest strengths, offering a slightly warm, full, but balanced sound. Treble refinement brings the headphone’s performance down a bit, being a bit bright and uneven at top, but still well within what I’d call an overall balanced sound. Some may even enjoy it for its tonal quality relative to other headphones. The K7XX has an airy, open sound, and is crisp, clear, and fast sounding. It’s lightweight, comfortable, and will work well from most devices, so long as they don’t have a weak headphone output. With an overall score of 82/100, it’s a great headphone and a great value. Well worth trying!
Bass - 8/10
The K7XX has nice bass extension, levels, and dynamics. All but the lowest octave has a tasteful, broad bump, transitioning nicely into the midrange. The broad emphasis helps them sound coherent and gives some warmth and fullness to the sound. Bass tightness and clarity are slightly better than, but overall similar to, headphones like the HD600/650, so overall decent-to-good rather than great.
Mids - 8/10
The K7XX has a nice midrange as well. It is fairly balanced, blends in well with the bass, detailed, and sound clear. However, it may sound a bit uneven and shouty in the upper-midrange, though whether one hears this the same way or minds will be highly variable.
Treble - 7/10
The K7XX falters a bit in the treble area. It can be a bit bright, uneven, and rough sounding, not quite meshing with the smooth, refined, and well-integrated bass and midrange. However, thanks to the bass warmth and fullness, it is still relatively in-line with how a good headphone should sound, if not slightly U-shaped in tonality. That said, the treble is sharp, clear, and detailed, which is a plus, but it falls just shy of reaching truly top-of-the-line performance in this regard. I would prefer it be a little smoother and less bright sounding, though.
Soundstage - 8/10
The K7XX has a nice, airy stage. It is wide and has solid instrument and vocal positioning. It sounds very open, as you would expect with its design! The K7XX could stand to improve with staging depth and layering, as it can be a bit forward sounding. Regardless, there’s a lot to like about the K7XX’s natural staging reproduction.
Transient Response - 9/10
The K7XX is overall quick, sharp, clean, and dynamic from top to bottom, save for, perhaps, the lowest octave. This is one of its primary strengths, and those who find the HD650 or similar too veiled may have found just what they’re looking for with the K7XX.
Build Quality – 9/10
The K7XX feels well built, despite being very lightweight. I would rate them a 10 if they had more premium materials in the build, but the fact is I’d have no concerns about tossing these in a bag for travel. The removable cable is a plus too!
Comfort – 8/10
The K7XX is rather comfortable and can be worn for long periods of time. However, the pads could stand to be a bit softer, both in material and plushness of the cushions, but they do wear down in a good way with use. At first, they may feel a bit stiff and awkward if you wear glasses, especially given the large cups and the way they lay flat on your head. On the other hand, the suspension headband is a very nice touch. Out of the box, I could probably wear these for 2-4 hours with ease, but as they break in over time, probably all day.
Value - 25/30
The K7XX offers upper-mid-tier performance for well below the cost of what you might expect. It’s definitely one of the better values on the market for what you get, even if it might not be for everyone. There are a handful of headphones I’d say are better overall at this price point or from a general value perspective, but the K7XX is still a great value nonetheless!
Overall Score - 82/100