LZ A4 IEMsearch



(8 reviews)
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Hybrid IEM With Detachable Cable & Tuning Filters

An updated version of the popular A3, LZ’s new flagship IEM, the A4, has been getting a lot of attention on Head-Fi for its excellent sound and build quality. The titanium-silver composite-diaphragm dynamic driver and dual Knowles balanced-armature drivers work together to produce a smooth, detailed sound, while the MMCX detachable cables offer flexibility for users who might want to switch them out down the road. And because LZ knows everyone likes their music a little differently, the A4 comes with a huge variety of accessories. Along with eight pairs of ear tips, you’ll get three rear filters and five nozzle filters, which together allow for 18 different tuning options.


Featured Community Review

Head-Fi’s peter123 says, “The LZ A4 is one sublime pair of IEMS, in my opinion. When it comes to sound, the performance of the LZ A4 is so good in so many areas in comparison to other top-tier IEMS that I feel it is the most complete pair of IEMs I’ve listened to so far… and that’s not all. They do also offer great build quality, as well as having very good ergonomics and isolation.”



  • LZ
  • Driver unit: 1 dynamic + 2 Knowles balanced armature
  • Impedance: 16 ohm
  • Headphone sensitivity: 120 dB
  • Frequency range: 20 Hz – 28 kHz
  • Connector: ⅛ in (3.5 mm)
  • Cable: MMCX detachable, 4 ft (1.2 m +/- 5 cm)
  • Weight: 1.1 oz (30 g)


  • 7 pairs of single-flange silicone tips
  • 1 pair of double-flange silicone tips
  • 3 rear filters and 5 nozzle filters in metal tin
  • Detachable cable
  • Zippered carrying case


All orders will be shipped by Massdrop.

Estimated ship date is Feb 22, 2018 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.

Recent Activity

These IEMs are incredible for its price. Have had them for about a year now, it is not thing of recent hype. Changed cable and tips (would not recommended crystal copper cables, because highs are majestic already and the sound turns too crispy for my tastes). Regarding tips, JVC Spiral dots are working the best for a lot of users (me too). Being honest, I don't have too much experience with real expensive IEMs (never tried 800$+ model and never owned 400$+), but the clarity of these is clearly hard to beat in their class (and a lot of more expensive options). The bass is very good and multifaceted (from a little bit enhacement to a real bass bomb using red back filters and correct front filters). The mids are very good too. Male voices a bit recessed and very natural, female voices a bit forward. With this, I honestly think that most people would have all they want in a hard-to-beat pair of mid-fi IEMs, and of course, the filters can always be changed to look for a different sound signature. Cons: Not the best cable, not the best tips. Some people has had moisture issues (I did read it in head-fi too), but I use them every day in Barcelona (with frequent humidity indexes above 80%, raining weather, sunny weather...) and only noticed sound change once, after running and sweating a lot on a sunny day. But after 5 minutes with the affected front filter out of the IEM at home, the issue disappeared. Finally, some people see the mmcx cable connection as a fault (it is fussy, yes) but I consider it a good thing due to cable changing turns into an easy operation. The base sound of the A4s is very very good and a real chameleon, due to filters. They can be changed to my linkings and I stopped using a couple of other IEMs I had reserved to Jazz, classical and acoustic music (JVC HA-FXT90, RHA-MA750, Advanced Sound S2000 and Shure SE425, which I never really liked because poor highs but are very relaxed). As final words, I have been looking for another pair of IEMs under 250€-300€ to improve the SQ but after listen to some of them, I have no clear choices and decided to stay with A4s (looked for iBaso IT03 too, as many people says that they have something special apart from SQ, but I have not found them in any store in Spain or the European Union and, being honest, I don't think that the sound would have improved remarkably if that was the case).