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KEFINE Quatio 2DD + 2BA Hybrid Hifi IEM Earphone Silver-Plated Braided Cable with Detachable 0.78 mm 2-Pin Interface
Features
Precision CNC Aluminum Housing
Silver-Plated Braided Cable
Replaceable Tuning Nozzles
Detachable 0.78 mm 2-Pin Interface
Dual 3.5 mm SE / 4.4 mm BA Plugs
Hybrid 2DD + 2BA Driver Configuration
KEFINE Quatio combines two dynamic drivers with two balanced armature drivers in each earpiece, delivering a warm, lush, and musical presentation. The exclusive 10 mm DLC diaphragm driver handles the full frequency range with high-resolution clarity, while the 8 mm PU + LCP diaphragm driver strengthens bass impact for a fuller low end. The dual balanced armatures kick in above 5 kHz to extend treble smoothly and reveal fine detail and spacious imaging.
Accurate Sound Control
By directing bass, mids, and highs through separate acoustic tubes—10 mm dynamic, 8 mm dynamic, and BA units—Quatio achieves precise frequency division. This hybrid approach, paired with electronic crossover tuning, ensures punchy lows, warm and lush mids, and smooth, non-harsh highs for a balanced overall signature.
Custom Stainless-Steel Tuning Nozzles
Quatio ships with three pairs of threaded stainless-steel nozzles to suit different tastes:
l Silver: neutral balance
l Gold: transparent clarity
l Black: warm emphasis
Easy to swap, these nozzles let you tailor the tonal balance, prevent tube blockages, and extend the product’s lifespan.
Precision CNC-Machined Housing
Each Quatio shell is crafted from aviation-grade aluminum via five-axis CNC machining (30+ minutes per pair, ±0.01 mm tolerance). The polished, anodized metal casing is slim (0.06 mm wall thickness) for a lightweight, comfortable fit, while offering excellent durability and a premium texture.
Modular Plug System
Two interchangeable plugs—3.5 mm single-ended and 4.4 mm balanced—ensure broad compatibility, from professional audio players to smartphones and laptops, without adapters.
High-Purity Silver-Plated Braided Cable
The included 4-strand, silver-plated oxygen-free copper cable (98 strands per core, 392 total) provides lossless signal transfer. Copper warmth merges with silver’s extended highs, yielding a full, detailed sound.
Detachable 0.78 mm 2-Pin Cable
Quatio’s standard 0.78 mm two-pin connection supports aftermarket cables, letting you upgrade or replace cables to unlock new performance or prolong lifespan.
Comprehensive Eartip Kit
Choose from 13 pairs of silicone and foam eartips across four shapes, plus two storage cases, to find your ideal seal and comfort level for any listening scenario.
Specifications
Brand: KEFINE
Style: In-ear
Driver Type: 2 DD + 2 BA
Driver Sizes: 10 mm & 8 mm
Frequency Response: 20 Hz – 20 kHz
Sensitivity: 107 ± 3 dB
Impedance: 32 Ω
Cable Length: 1.2 m ± 0.2 m
Plug Types: 3.5 mm SE & 4.4 mm BA
Package Size: 140 × 120 × 65 mm
Weight (Package Included): 308 g
Packing List
1. Quatio earphone: 1 unit
2. Hard carrying case: 1 pc
3. Extra nozzles: 2 pairs
4. Eartips (L/M/S): 12 pairs
5.User manual: 1 pc
6. Quality certificate: 1 pc
7. Notice card for nozzles: 1pc
8. Eartip storage case: 2pcs
