iBasso 3T-154 black front with attached stock cable over white background
iBasso 3T-154 silver front with attached stock cable over white background
iBasso 3T-154 black front quarter with attached stock cable over white background
iBasso 3T-154 silver closeup with detached stock cable
iBasso 3T-154 silver front with detached, coiled stock cable and modular plugs
iBasso 3T-154 silver closeup with attached stock cable over black background

iBasso 3T-154 | Single Dynamic Driver Universal IEMs

Regular price$149.00


iBasso logo horizontal

Achieve Remarkable Performance and Minimal Distortion With iBasso's Single Dynamic Driver 3T-154 IEM

  • One of the largest diaphragms on the market at 15.4mm
  • Features ≈3T Magnetic Flux for superb dynamics
  • Lightweight Magnesium alloy shell for rigidity, impact resistance, and resonance reduction
  • 1.2mm Quick Switch modular plug system (includes 3.5mm + 4.4mm)

iBasso 3T-154 silver with attached stock cable connected to iBasso digital player

≈3T Magnetic Flux

iBasso's innovative dual magnetic circuit design combined with the custom high magnetic strength N55 NdFeB magnet yields an astonishing magnetic flux of approximately 3T. This is nearly double compared to the current 1.6T magnetic flux of other flagship IEMs. The strong magnetic flux of the 3T-154 has many advantages such as superb transient response, concise detailed bass, better micro details and more. The listening experience is outstanding.

2 sets iBasso 3T-154 earphones in silver and black with attached stock cable on blue board

15.4mm Maximized Diaphragm

The 3T-154 utilizes a 15.4mm diaphragm, one of the largest out there for an IEM (an increase in size of about 137% over popular 10mm diaphragms.) The 15.4mm large diaphragm has excellent sound pressure, and combined with the ≈3T magnetic flux, you can experience the most superb live music dynamics you've ever heard from an IEM.

Embossed, Beryllium-plated Diaphragm

The beryllium-plated diaphragm possesses remarkable internal resistance and exceptional rigidity. Additionally, the embossing technology further enhances rigidity, drastically minimizing distortion while enhancing sound precision.

iBasso 3T-154 two thumbnails highlighting driver shape, internal components explosion

Magnesium Alloy Shell

3T-154 uses high-hardness magnesium alloy as the shell material. Comparing the same volume, this magnesium alloy is about 36% lighter than aluminum alloy shells and 78% lighter than stainless steel shells. It also has stronger rigidity, impact resistance, reduces resonance caused by the unit, and has excellent stability.

1.2mm Quick Switch Plug

3T-154 has added the 1.2mm quick switch plug system which consists of (x4) 1.2mm large-size pins. Compared with the common 0.78mm pins, iBasso's system has a more robust contact area, the internal resistance is lower, the signal transmission loss is negligible, and the conductivity is outstanding!

closeup iBasso 3T-154 modular 4.4mm plug with logo

2-Pin Detachable IEM Cable

The 3T-154 features a detachable cable design and adopts the standard 0.78" 2-pin interface, making cable replacement sourcing super convenient. This high-purity Silver-plated Copper cable is a standard, stock feature in the 3T-154 package.


  • Model No: 3T-154
  • Type: Dynamic
  • Frequency Response: 7Hz-41kHz
  • Sensitivity: 116+/-2dB
  • Impedance: 16Ω
  • Noise Attenuation: -26dB
  • Rated Power: 10mW
  • THD: <1% (at 1kHz /179mW)
  • Plug Size: 3.5mm TRS Gold-plated, 4.4mm TRRRS Gold-plated
  • Cord Length: 3.94' (1.2m)
  • Weight: 18.8g w/o cable

In the Box

  • 3T-154 IEM
  • Silver-plated Copper cable
  • 3.5mm and 4.4mm modular plugs
  • Assorted eartips
  • Leather carry case
  • User guide
  • Warranty card

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