Truthear Zero:RED vs Zero:BLUE 2: which one should you buy?

Zero:RED or Zero:BLUE 2: which should you choose?

Pick the Zero:RED (₱2,849) if you want the model other buyers have already tested: it has 4.93 from 242 reviews on our store. Pick the Zero:BLUE 2 (from ₱2,699) if you want the newer design, a plug-ready 3.5 mm cable and, if you need it, a version with a mic.

They share the same driver sizes, so the decision is less about "better" and more about plug, mic and how they behave with your source. We have not run our own side-by-side listening test; the sound notes below are Truthear's wording.

How do the specs compare?

Every spec below comes from Truthear's own product pages, checked on 11 November 2026.

What is the difference in sound?

We have not measured or listened to them against each other, so here is what Truthear's pages say. For the Zero:RED, Truthear describes "a warm, balanced sound signature" with "controlled bass" and a "dedicated subwoofer" driver. For the Zero:BLUE 2 it describes a 10 mm silicone-suspension driver for bass and a redesigned 7.8 mm LCP driver for mids and highs, with "a rich, immersive soundstage".

Treat those as marketing descriptions. Our store listing sums them up as full-bodied bass with clear vocals on the RED, and deep, textured bass with clean mids on the BLUE 2. If sound character is the deciding factor, the RED has hundreds of customer ratings behind it; the BLUE 2 has none yet on our store.

Why does impedance matter here?

The Zero:BLUE 2 is rated at 5.8 Ω, much lower than the Zero:RED at 17.5 Ω. Shure explains that impedance affects how an earphone interacts with the output of the device you plug it into, and Sonarworks notes it can change the frequency response with some sources. In practice, a low-impedance IEM can sound different from different adapters or phones, so buy it with a decent USB-C adapter or a headphone jack in mind. Both IEMs list high sensitivity; our store listings say both reach full volume from a phone dongle. For more on this, see do you need a DAC for IEMs.

Which one is better for calls and gaming?

The Zero:RED has no mic. The Zero:BLUE 2 has a separate mic version, which is sold at a higher price than the standard version; check the variant before you order. For voice chat, that version saves you from carrying a second headset.

Which one fits better?

Both come with silicone tips in S, M and L, and foam tips. The Zero:RED includes thick and thin bore silicone tips, which gives you more combinations to try. A poor seal reduces bass on any IEM, so try the sizes before you decide the sound is wrong; see how to choose eartips.

Delivery and warranty in the Philippines

We ship from Valenzuela, Metro Manila, through J&T nationwide. Delivery takes 1–3 days in Metro Manila, 1–5 days in Luzon, and 3–7 days in the Visayas and Mindanao. Orders placed before 2 PM, Monday to Saturday, ship the same day. Express Metro Manila delivery costs ₱250 by Lalamove, and standard shipping is free on orders over ₱500. Items carry a 3-month warranty with replacement for manufacturing defects, and we pay the J&T return postage for covered claims, which you file through facebook.com/tictechtoeph.

FAQ

Are the Zero:RED and Zero:BLUE 2 the same IEM?

No. They share driver sizes and the 2-pin cable fitting, but the impedance, sensitivity, plug and tips differ.

Do I need an amp?

Truthear's specs show both are sensitive and low-impedance. A phone or a basic USB-C to 3.5 mm adapter should be enough.

Which is better for a first IEM?

The Zero:RED is the better-proven choice on our store. If you want a first IEM for less, see the guide to your first IEM or IEMs under ₱1,000.

Can I replace the cable?

Yes. Both use a detachable 0.78 mm 2-pin cable, so you can swap in another 2-pin cable later.

Where can I see more IEMs?

Browse the Truthear collection.