Rock Zircon – Review

Rock Zircon

Rock Zircon

| 8 mm Driver | Neodymium Magnet |

? Rock Zircon, a beautifully designed earphone packed with an 8mm dynamic driver and a powerful neodymium magnet; everything is fitted inside a tiny housing that looks sophisticated. The model name “Zircon” suggests that the earphones construction material includes Zircon which is usually used to build decorative ceramics and metallic zirconium; one of our teammates at has a background in science but he did not know about the specifics of Zircon nor Zirconium materials so take our brief chemistry lesson with a grain of salt.

… the Rock Zircon feel very solidly built with toughness and feel similar to either ceramics or metal.

Anyway, the housings of the Rock Zircon feel very solidly built with toughness and feel similar to either ceramics or metal. Despite the tough construction quality they are light weighted and very small.

The design of the housings is very original with ergonomics taken in consideration, the back part of the housings narrow up so that grabbing them is easier; we have reviewed other earphones that had a similar back housings ergonomics like the Sennheiser CX200, VJJB K1S, Remax RM-702 and UiiSii C100 to name just a few.

Cable is divided in two sections with different materials (see photos below). The first section, from the stereo plug up to the cable bifurcation, is braided while the 2nd section is rubbery, this resembles something that we saw with the Xiaomi Mi Quantie Pro Hybrid/Xiaomi Mi In-Ear Heaphones Pro but the quality of the materials used on the Rock Zircon feel better. The rubber section of the cable does a very good job against tangling issues as well as the braided section, the cable also holds an inline microphone and 1-button control. The button can be used to play/pause, skip tracks, answer/reject calls.

Rock sells the Rock Zircon in 2 colors, white or black.

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Rock Zircon - Review

Tests & Scores



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Accessories & Packaging

The Rock Zircon come packed inside a box with 2 extra pair of eartips.


Rock Zircon - Accessories
Rock Zircon – Accessories


Bass & Sub Bass

Bass coming from the Rock Zircon has very good punch and depth, it is not basshead strong but still their bass is very energetic and will be strong enough for any type of music. The Rock Zircon can be used to listen music genres such as pop and even EDM without feeling any lack of bass but if you dislike bassy iems they may not be the best choice for you.

The Rock Zircon can be used to listen music genres such as pop and even EDM without feeling any lack of bass…

After an EQ, the Zircon became much punchier and deep but things started to get muddy and too boomy.

The Rock Zircon were able to handle 42% of a Fiio E12 amplifier‘s maximum power under our extreme bass tests (the portable amplifier was set to high gain and bass boost was turned on; a custom basshead EQ was applied too) and answered back with an aggressive increment of mid-bass punch and sub-bass depth. Regarding basshead impact and rumble, the Rock Zircon were able to achieve a respectable level inline with the KZ ATE, XKDUN CK-660 and VJJB K1S but a bit distorted. Do not expect a true basshead impact and rumble like the Sony MDR-7550/EX800ST, Sony MDR-XB50AP, Plextone X41M, Senfer 4in1, KZ ZST, KZ ZS2, Xiaomi Mi Quantie Pro Hybrid, Elecom EHP-CA3580, Pioneer SE-CX8, Plextone X50M, Pioneer SE-CX9, Doboly Q18 or the Puma Bulldogs.


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Mids & Vocals

The Rock Zircon has warm mids with laid back lower vocals and lower mids; lower vocals are recessed by mid-bass bleed. Higher mids are less recessed than lower mids and not harsh. Nevertheless, mids and vocals will sound fine to normal listeners. An EQ made a drastic change of lower mids and lower vocals making them sound incredibly better but you will have to be careful about higher mids that start to get harshy. So, it is better to not over equalize higher mids frequencies.



Highs & Treble

The highs of the Rock Zircon have some detail but are not the brightest iem that you can get by any means. Piercing and sibilant highs is not an issue with the Zircon unless you are very treble sensitive. With an EQ much more detail and brightness was gained, sibilant and piercing highs still did not showed up.


Rock Zircon vs KZ ZST
Rock Zircon vs KZ ZST


Sound Leak

The sound that leaks out of the Zircon is very low. They can be a good companion if you intend to use it at libraries or want to keep private what you are listening to (if you do not use a very high volume)



Sound Isolation

The Rock do a pretty good job blocking outside noises. Sound surrounding you will get noticeably reduced.




Form factor, tiny size, light weight, angles nozzles and high quality materials make the Rock Zircon an extraordinarily comfortable earphone that can be used for very long listening sessions with any issue at all. As a personal preference we found that putting them inverted (left earpiece in right ear and right earpiece in left ear) fit was tighter, seal was better and more comfortable but grabbing them by the back part of the housing will be more difficult.



Response to Equalization

The Rock Zircon response to custom equalization was great, every audio frequency improved substantially and in general not much issues were introduced. Mids had an outstanding improvement mostly on lower mid frequencies, highs got much more brightness and detail and bass gained very noticeable punch and depth but became a bit too boomy and started to make mids too muddy.


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Rock Zircon
Rock Zircon


Scores Scores

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Frequency Response (raw)

Rock Zircon Frequency Response

Rock Zircon - Frequency Response
Rock Zircon – Frequency Response

Rock Zircon


Driver Unit8mm
Power Capacity3mW
Impedance16 ohms
Frequency Response20-20,000Hz
CordY-type, round cord
Cord Length1.2m
PlugL shaped stereo mini plug
WeightApprox. 16g
Supplied Accessories2x Earphone tips

We highly discourage anyone from trying to apply our testings to your own earphones, the risk of damaging or permanently breaking your iems is absolutely probable to happen. With our standardized equalization and amplification tests we push the limits of the earphones to the extreme. If anyway you decide to do so, we cannot be held responsible of the damage done to your equipment. Do it at your own risk.

Rock Zircon