Home Comparison Last updated:February 15, 2021Over the years, music has become a large part of the lives of users around the world, and, therefore, new ways of making it can be heard anywhere have come to light, and among them are find wireless headphones. KZ is one of the largest companies in this regard, and today we will compare some of their Earphones in this KZ s1 vs KZ t1 vs z1 vs s2 comparison! What's Inside KZ s1 vs KZ t1 vs z1 vs s2 – All The Differences You Need To Know!KZ s1 vs KZ t1 vs z1 vs s2 – Specifications (Specs) Sheet ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Design & Appearance ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Comfort & Wearing Experience ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Charging Case ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Hardware & Performance ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Sound Quality ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Talking / Call Experience ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Connectivity ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Function & Features ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Battery Life ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Price ComparisonKZ s1 vs KZ t1 vs z1 vs s2 – Summary KZ s1 vs KZ t1 vs z1 vs s2 – All The Differences You Need To Know! KZ s1 vs KZ t1 vs z1 vs s2 – Specifications (Specs) Sheet Comparison ModelKZ s1KZ t1KZ z1KZ s2 Bluetooth version V5.0 V5.0 V5.0 V5.0 Bluetooth protocol A2DP, AVRCP, HFP, HSP A2DP, AVRCP, HFP, HSP A2DP, AVRCP, HFP, HSP A2DP, AVRCP, HFP, HSP Transmission distance 10 - 20 meters 10 - 15 meters 10 - 15 meters 10 - 15 meters Driver unit 1DD + BA 1DD + BA 10mm1DD + BA Battery capacity 300mAh900mAh400mAh500mAh KZ s1 vs KZ t1 vs z1 vs s2 – Design & Appearance Comparison Before we talk about the way these four pairs of wireless headphones work, let’s talk a bit about the most notable thing, their design. At first glance, we can see that these four are very similar since both have the very useful and popular full in-ear design, which gives them the opportunity to position themselves in a great way inside the ear, avoiding so there are so many problems when the user is on the move. Likewise, all these wireless headphones are ergonomic and very light, in addition to being adaptable to any size of the ear since they have sport rubbers of three different dimensions. It is worth noting that they are not resistant to scratches and bumps, so you have to be very careful with them. Also, the KZ s2 has the much-needed IPX5 certification, and while this type of certification makes the devices waterproof, it is not that recommended to fully submerge them in water. On the other hand, the KZ t1 has the IPX4 certification. Also, the company has not said a word about the IPX certification of the s1 and z1 versions. Having said that, and this being one of the best characteristics that these four earbuds have in common, is that they all have touch panels, which although they are not capable of carrying out complicated actions, do work with the most basic and important controls. KZ s1 vs KZ t1 vs z1 vs s2 – Comfort & Wearing Experience Comparison Concerning the comfort that these headphones offer, ultimately they have many points in their favor. Since they are made of plastic, the earbuds are extremely light, in addition to having three silicone ear tips (S, M, and L) which are suitable for almost every ear size. Likewise, and due to their comfort and the certifications they have, they can be used not only as common headphones, but they can also be used when exercising since they cling very closely to the ear, which is always a big plus point. About wearing, they can be used for a long time as long as the appropriate size of ear tips is being used, although, and like any other headset made of plastic, it can be a bit annoying for some users. KZ s1 vs KZ t1 vs z1 vs s2 – Charging Case Comparison Now, and talking about the charging case of these earbuds, the truth is that there is not much difference between them. Both cases have a magnetic closure mechanism, which can assure us that it will not open with any movement we make, thus keeping the headphones safe. All are charged through a micro-USB port, which is charged thanks to a USB Type-C cable provided by the same company. About their capacity, the charging case of the KZ S1 has a battery with a capacity of 300mAh, the charging case of the KZ t1 has an amazing battery with a capacity of 900mAh, the charging case of the KZ z1 has a battery with a capacity of 400mAh and, lastly, the charging case of the KZ s2 has a battery with a capacity of 500mAh. KZ s1 vs KZ t1 vs z1 vs s2 – Hardware & Performance Comparison When it comes to hardware, many people would think that some high-end chip made by some popular company is inside these headphones, and that’s the case for none of these earbuds. The KZ s2 works together with a chip made by Realtek, the Realtek 8763. On the other hand, in relation to the rest of the earbuds, there is no knowledge about the chip that they have inside. KZ s1 … ??? KZ t1 … ??? KZ z1 … ??? KZ s2 … Realtek 8763 With that being said, one of the highlights of these products is the master switch added to each earbud. This means that either of the earbuds will serve as the main earbud and will carry the functions of the main earbud (play, pause, call, forward, etc.). KZ s1 vs KZ t1 vs z1 vs s2 – Sound Quality Comparison Now moving to the sound quality, the reality is that you can’t expect professional audio; Remember that when buying any model of True Wireless headphones, you are dispensing with audio quality to gain comfort. In this sense, the KZ z1 has a 10mm dynamic driver, while the KZ s1, t1, and s2 have a 1DD + BA combo (One Dynamic Driver + Balanced Armature). The difference between BA and dynamic drivers is that BA does not displace air to produce sound, having a lack of bass as a result, although the single dynamic driver that it has improves this aspect a bit. Although they do not give the best sound on the market, to get a better listening, you can turn the volume up to its highest capacity. KZ s1, t1, and s2 have: Better performance in the treble frequency than KZ z1 Better detailed sounds than KZ z1 KZ z1 has: Better clarity than KZ S1 Better bass than KZ S1 Better controlled bass than KZ S1 Better soundstage than KZ S1 KZ s1 vs KZ t1 vs z1 vs s2 – Talking / Call Experience Comparison About the experience in calls, there’s no microphone difference in these four earphones. They have the same mic. Also, the call quality is just average, nothing special. They can be easily used when talking on the phone in any closed space, although the problem comes when they are used in open spaces with noise; the audio and microphone quality drop immediately, and if there is a lot of noise, it will be almost impossible to have a conversation that can be understood. KZ s1 vs KZ t1 vs z1 vs s2 – Connectivity Comparison Due to the use of Bluetooth 5.0, the connectivity of these two headphones to other devices is of high quality, in addition to is capable of greater stability, battery optimization, and have a faster connection speed. The KZ t1, z1, and s2 have a range of 10 to 15 meters of connectivity while the KZ S1 has a range of an amazing 20 meters and, on top of that, we found that they can be used separately and linked in the same way. Also, they automatically connect after removing them from the box after being paired with another device. KZ s1 vs KZ t1 vs z1 vs s2 – Function & Features Comparison Now let’s discuss the functions and features of these earbuds. In the KZ s1, we have things like: 1DD + BA combo iOS and Android compatibility In the KZ t1, we have these additional features apart from the above-said features: IPX4 certification AAC support Gaming mode In the KZ z1, we have things like: 10mm dynamic driver Smart touch control Lastly, in the KZ s2, we have these additional features apart from the above-said features: IPX5 certification Voice assistant Dual master switch KZ s1 vs KZ t1 vs z1 vs s2 – Battery Life Comparison In relation to the battery, and as mentioned before, the charging case of the KZ S1 has a battery with a capacity of 300mAh, the charging case of the KZ t1 has an amazing battery with a capacity of 900mAh, the charging case of the KZ z1 has a battery with a capacity of 400mAh and, lastly, the charging case of the KZ s2 has a battery with a capacity of 500mAh. With that being said, all of the earbuds have individual batteries with a capacity of 43mAh for the KZ s1, 50mAh for the KZ t1, 30mAh for the KZ z1, and 40mAh for the KZ s2. KZ s1 vs KZ t1 vs z1 vs s2 – Price Comparison The KZ S1 is available in various online stores, but the lowest price is found on AliExpress with a price that is around $21 to $24 and the KZ Z1 has a price of $34. On the other hand, t1 and s2 are not available. - 40% Aliexpress KZ S1 S1D TWS True Wireless Bluetooth 5.0 Earphones Dynamic/Hybrid Earbuds... $21.01 $35.02 Grab Now! - 40% Aliexpress KZ S2 True Wireless TWS Earphones Bluetooth v5.0 Hybrid 1DD+1BA Game Earbuds... $28.19 $46.99 Grab Now! - 49% Aliexpress KZ Z1 TWS True Wireless Bluetooth v5.0 Earphones Dual magnetic Dynamic Game... $27.64 $54.20 Grab Now! Amazon.com KZ Z1 TWS True Wireless Earphones Dynamic Earbuds Touch Control Noise... $34.00 Grab Now! Amazon.com KZ S2 1DD+1BA TWS Bluetooth5.0 Earphone AAC HD Hybrid Technology Earbuds... $29.00 Grab Now! Amazon.com KZ S2 Hybrid Dual Driver in Ear Earphones, TWS True Wireless Bluetooth 5.0... $42.99 Grab Now! Amazon.com KZ S1 S1D TWS Bluetooth 5.0 Wireless in Ear Earphones Dynamic/Hybrid... $23.00 Grab Now! Note: KZ T1 is no longer available for purchase. It has been discontinued by the manufacturer. KZ s1 vs KZ t1 vs z1 vs s2 – Summary All have a full in-ear design KZ s2 has IPX5 certification KZ t1 has IPX4 certification KZ t1 charging case and earbuds have more capacity KZ s2 has a Realtek chip KZ z1 has a 10mmdynamic driver KZ s1, t1, and s2 have 1DD + BA KZ S1 is the cheapest We hope you loved this KZ s1 vs KZ t1 vs z1 vs s2 comparison. Which one is your favorite TWS earbud? Let us know in the comments.