Will the zero red have as good passive noise cancelation as the etymotic er2x ?

The outside noise blocking of the Zero:Red will not very good compared to the Etymotic ER2XR. All of Etymotic's products are designed for the maximum amount of noise blocking, the best in the industry. The Zero:Red is designed to have an overall neutral sound with a moderate bass boost. The foam eartips that are included will have the most noise blocking of all of the included eartips. However, the foam eartips may not be very comfortable compared to the included silicon eartips. For $50 USD the Zero:Red's will likely have the best audio quality compared to similarly priced IEM's. But they probably won't be the most comfortable IEM's in this price range as they are very large. You will likely need to buy better eartips if you want more comfort or sound blocking with the Zero:Red's. Comply makes the best foam tips, SpinFit makes the best silicon tips.

What tws adapters will work with these? Will the fiio utws 3 or utws 5 work?

These are 2 pin IEMs, not MMCX, so make sure you buy the 2 pin version of the UTWS 5. It doesn't look like the UTWS3 comes in a 2 pin version. Also, the connectors for the IEMs are slightly recessed so even the UTWS 5 might not connect properly. I would suggest getting a Bluetooth DAC instead and just dealing with the stock cable.

Are the reds blutooth abd which codecs do they use?

No they are Not Bluetooth, but the BTR5 will turn ang wired unit into wireless with just a little dongle clipped on your shirt or waste.

What does it come with in the box?

7 sets earbuds and a nice Pleather carry case and the 10 ohm impedance adapter, also comes with the speaker screens for replacement. It's a good package. If upgrading eartips you'll need those for wide Nozzles like the Spinfit 155s

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TRUTHEAR x Crinacle Zero:RED Dual Dynamic Drivers in Ear Headphone with 0.78 2Pin Cable

TRUTHEAR x Crinacle Zero:RED Dual Dynamic Drivers in Ear Headphone with 0.78 2Pin Cable

Product ID: 556107519

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Details

Brand
Fanmusic
Colour
RED
Ear Placement
In Ear
Form Factor
In Ear
Impedance
16 Ohm

🎧Dual dynamic drivers for rich sound

🔌Copper-plated silver retractable cable

🧲N52 Rubidium magnet for powerful magnetic circuit

Description

🎧 Elevate your sound game with ZERO:RED — where precision meets passion.

PRECISION MAGNETIC CIRCUITRY - N52 Rubidium magnets combined with a double-cavity design ensure unmatched audio clarity and dynamic range.
CUTTING EDGE 3 D PRINTED CAVITY - DLP-3D printing technology used for ultra-precise acoustic chambers usually reserved for premium custom earphones.
IMMERSIVE DUAL DRIVER EXPERIENCE - 10mm + 7.8mm drivers deliver crystal-clear highs and deep bass for audiophile-grade sound.
PREMIUM COPPER PLATED SILVER CABLE - Thicker single-strand cable with retractable design offers durability and tangle-free convenience.
CUSTOM TUNED LIQUID CRYSTAL DIAPHRAGM - Polyurethane suspension composite LCP dome diaphragm enhances sound fidelity and reduces distortion.

The TRUTHEAR x Crinacle Zero:RED is a wired in-ear headphone featuring dual dynamic drivers (10mm and 7.8mm) with advanced N52 Rubidium magnets and a double-cavity magnetic circuit. It incorporates DLP-3D printed acoustic chambers and a premium copper-plated silver retractable cable with a 0.78mm 2-pin detachable connector. Designed for adults, it delivers a wide frequency range (20Hz-40kHz) and superior sound clarity, making it a top-tier choice for audiophiles and professionals seeking high-fidelity audio.

Specifications

Headphones Jack	6.35 mm Jack
Model Name	ZERO:RED
Connectivity Technology	Wired
Included Components	Cable
Age Range (Description)	Adult
Material	Copper
Cable Feature	Retractable
Item Weight	231 g
Frequency Range	20hz - 40khz
Net Quantity	1 Count
Number of Items	1
Manufacturer	TRUTHEAR
Model	Zero:RED
Package Dimensions	16.2 x 10.1 x 5.2 cm; 231 g
Item model number	Zero:RED
Hardware Platform	Smartphone
Special Features	Detachable Cable
Microphone format	in Ear
Batteries Included	No
Batteries Required	No
Cable feature	Retractable
Form Factor	In ear
Manufacturer	TRUTHEAR
Country of Origin	USA

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