【Important Notice for International Buyers – Tomoayax Japan Rare Authentic Items】
■ Authenticity
All items we sell are 100% authentic.
We carefully source our products from trusted suppliers in Japan.
■ Condition
Many of our items are rare, vintage, or pre-owned.
Such items may show signs of age, storage, or previous use, including minor scratches, wear, or deterioration.
Condition may vary depending on individual expectations.
Please carefully review all photos and descriptions before purchase.
■ Buyer Responsibility
The buyer is fully responsible for understanding the item condition and details before purchase.
We do not accept claims based on subjective expectations (e.g., "not as expected").
■ No Return / No Refund Policy
All sales are final.
We do NOT accept returns or refunds for:
・Minor scratches, aging, or signs of use
・Differences in personal expectations
・Color or appearance differences due to lighting or display
・Any condition clearly shown in photos or described
■ Functionality
Unless otherwise stated, we do not guarantee long-term performance or durability.
Especially for vintage items, future functionality cannot be guaranteed.
■ Liability
We are not responsible for any damage, deterioration, or issues after delivery.
■ Final Notice
Please ensure full understanding of the above before purchasing.
- [7 Driver Units per Side, 4*BA + 2*Beryllium-Coated DD + 1*PZT] The NX7 MK4 continues a new way of playing with the NX7 series, and is the fourth generation and an upgraded version of the NX7 series; the NX7 MK4 earphones are designed with 7 multi-drivers that operate independently and fully demonstrate their capabilities; each side of the NX7 MK4 earphone has 4 balanced armature drivers + 2 beryllium-plated diaphragm dynamic drivers + 7-layer piezoelectric ceramic unit, for a total of 7 units; ① 4BA: Responsible for high frequencies - clear and transparent highs, ② 2*Beryllium-Coated DD: Gorgeous ultra-high frequencies, ③ 7-layer piezoelectric ceramic unit: Improved low-frequency volume and quality.
-【Interchangeable Filters】Enjoy three different sound types with the switchable filters. The NX7 MK4 is designed with switchable filters; it comes with three colored filters in pairs: gold, red, and black. Enjoy three different sound types: "balanced sound," "mid-high frequencies," and "deep bass," satisfying diverse needs.
-【Professional Acoustic Sound Tuning, Includes Mixed Cable of Silver-Plated High-Purity Copper and Single-Crystal Copper Wire, Improved 2-Pin Connector】The NX7 MK4 uses an even higher quality cable, and comes with a 3.5mm or 4.4mm + 2-pin mixed cable of silver-plated high-purity copper and single-crystal copper wire. The over-ear cable is very soft; the NX7 MK4 has a more stable 2-pin plug structure and a limited-slot design for longer use, effectively extending the lifespan of the plug.
-【Beautiful Panel Composed of Three Materials】The faceplate, made of stabilized wood, resin, and aluminum alloy, is combined with a transparent black housing, resulting in a vibrant and sleek appearance. It features a skeleton design that allows you to see the internal structure of the shell; it's lightweight, so you'll feel comfortable when wearing the earphones. The ergonomic design ensures a comfortable fit, making it suitable for extended use; the NX7 MK4 is an earphone with an in-ear monitor type housing and is detachable via a 2-pin cable; (Please note that the pattern on each earphone faceplate is random, and the image is for illustrative purposes only; this is not a quality issue.)
- [Six-month warranty period, purchase with confidence] The warranty period for non-human-caused quality issues is six months from the date of purchase.
specification:
1. Product Name: NICEHCK NX7 MK4 In-Ear Headphones
2. Brand: NICEHCK
3. Model: NX7 MK4
4. Drivers: 4 balanced armature drivers + 2 beryllium-plated diaphragm dynamic drivers + 7-layer piezoelectric ceramic unit
5. Wearing style: In-ear headphones
6. Impedance: 39Ω
7. Sensitivity: ① Gold filter 112 dB/mW ② Red filter 113 dB/mW ③ Black filter 110 dB/mW
8. Playback frequency range: 20-28kHz
9. Plug: 3.5mm plug or 4.4mm plug
10. Cable length: 1.2m ± 5cm
11. Cable Material: Mixed cable of silver-plated high-purity copper wire and single-crystal copper wire.
please note:
① The earphone faceplates are hand-painted, so we cannot guarantee that the patterns will be exactly the same. The photos are for reference only. This is not a quality issue. We appreciate your understanding.
② Cable oxidation is a normal phenomenon. For example, it can be caused by a humid environment, contact with water or sweat, and the time it takes for oxidation to occur varies depending on the usage time. This is beyond our control, so we ask for your understanding.
Package contents:
- NICEHCK MK4 earphones
- One mixed cable of silver-plated high-purity copper wire and single-crystal copper wire.
- NICEHCK earphone case * 1
- Various types of ear tips
- Earphone coupling band * 1
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