The In Ear headphones from Knowledge Zenith, the KZ ZSN Pro, come in a white package with a delicate grey print. In addition to an exchangeable 2-pin cable and three sets of silicone tips, there is also an instruction manual and a warranty card.
The housings of the ZSN Pro are mostly made of plastic, whereby the faceplate is screwed on of brushed aluminium. The two halves are screwed together exactly, there are only minimal transitions, which are more than okay for the low purchase price. The connections for the cable are designed as a terminal, i.e. the plugs are plugged on. Thanks to the coding this works perfectly. The cable consists of four strands, is double twisted up to the split and from the split it continues twisted in pairs. The cable is quite thin and tends to get tangled, but this does not affect the electrical properties.
The KZ ZSN Pro contains a dynamic and a BA driver inside. Its impedance is 25 Ohm and with 104dB/mw the headphones can be used with simple players. The connecting cable is 1.2m long and has a 3.5mm stereo jack plug.
The shape of the housings is widely used for over-ear OEMs. Thanks to the weight of only approx. 23 grams per ear and the universal housing shape, the In Ear fits perfectly. The wearing comfort is very good even with long listening times.
The ZSN Pro is not a shy, silent or cautious analyst. Rather the opposite is the case. From the very first note the concentration camp ZSN Pro is noticeable, for my ears in a thoroughly positive way. In the bass it goes down ultra low, for the ears really physical. If you watch videos with the KZ ZSN Pro, you will absolutely get your money’s worth. When it comes to music, it can sometimes be a bit too much, depending on the music style. With Classik Rock that’s no problem at all, but with Jazz or Electronics the bass thumps into the ear canal. I’m not saying that I don’t like it, but it could be too much for some people.
With hard and fast kick basses the ZSN Pro is unfortunately a little too slow. This sounds a bit too soft for me from time to time, best compared to the bass of a Fostex TH-X00 with its bi-cellulose drivers. At this point I have to point out the price/performance ratio. This is nevertheless outstanding and in view of the investment one will hardly find a better IEM in this price comparison with such a fun and nevertheless very pleasant tuning. Because the BA driver is perfectly tuned to the bass. Enough intensity to complement the sound and just enough to make it not sound sibilant. In the mid-range the KZ ZSN Pro is a little reduced, but in the 2-3kHz range it plays a bit forward. This makes the ZSN Pro sound fresh, fun and authentic at the same time.
The Tin Hifi T2 Pro is quite similar in bass, albeit a bit more restrained, but in high frequencies it is clearly more demanding than the KZ ZSN Pro. The ZSN Pro doesn’t have the clear V tuning of the T2 Pro. It does indeed sound more honest and at the same time has a neatly accentuated bass foundation. In the area of transparency and dynamics, however, the KZ Pro is in 2nd place. But here, too, the price has to be compared.
The KZ ZSN Pro is definitely a price tip! Even if it doesn’t play every genre equally well, it should be worth the fun for everyone to buy the ZSN Pro as additional headphones. I can fully recommend the ZSN Pro for watching blockbuster movies of any kind. It sounds like home cinema in your ear.