KEFINE Quatio

2DD + 2BA Hybrid Earphone

• 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:
  Silver: neutral balance
  Gold: transparent clarity
  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.