EBT Bi Metal Series models:

EarrBOND’s new metal tube earplugs sound intriguing! The “steel-wrapped copper” Bi-Metal tube design is a clever approach. By partially covering the Stainless Steel surface with oxygen-free copper, they maintain the distinct sound characteristics of both metals.

It is a hybrid design with metal tube, memory  foam  and silicone shell

The series consists with three sizes

• Small
• Asian-fit 
• Standard

• Oxygen-Free Copper (OFC):
  • OFC, being a soft metal, enhances performance across the earphone/headphone’s frequency ranges.
  • It results in improved richness of sound and strengthens the low-frequency rebound sensation.
  • The use of OFC ensures a warmer, more inviting sound.

• Stainless Steel:
  • Stainless steel, being harder, contributes to a sharper and more solid sound across the entire frequency range.
  • It effectively reduces sound distortion.
  • The purified tubing ensures clearer       and more accurate high-frequency response, providing clean-lines.

The concept of the Bi-Metal tube design draws inspiration from Hong Kong’s popular traditional drink “Yuanyang Tea” , “Milk tea blends with Coffee.” Just as this drink combines the best of both worlds, the Bi-Metal tube combines OFC and Stainless Steel features. Here are the two models:

1. Half-and-Half Design (C2S2):

• This model blends the sound signature of OFC and stainless steel.
• The ratio brings clarity, accuracy, warmth, and a strengthened low-frequency rebound sensation.

2. Quarter OFC Design (C1S3):

• This design leans more toward stainless steel but retains a hint of the “OFC aftertaste.”
• It slightly softens the sharp and solid characteristics from stainless steel.