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© 2017 by Alpha & Delta. 


Dual Driver Design for Excellent Sound Quality


In designing this IEM, we aimed to create a pair of earphones that has a strong punch bass while maintaining the overall clarity in the mids and the highs. To this end, a dual driver design is used for such purposes. 

Modular Design


AD01 also adopts a modular design. This means that that drivers and the wires can be easily replaceable if damaged or lost. The drivers and wires are available for sale separately.


An upgrade cable is also available to improve the sound quality.

Well designed connection pins


For AD01 to use a modular design, the wires needs to be detachable. However, several existing solutions for the connector pins can lead to loose connection overtime. To this end, AD01 overcomes such build quality issues by adopting the 2mm dc plug connector pins which are extensively tested for reliability. 

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  • 1 pair of foam tips

  • 3 pairs of biflange tips

  • 6 pairs of silicon tips of various sizes

  • 1 hard case 

  • 1 pair of ear guides 



  • Driver unit: 9.8mm and 6.0mm Dual Dynamic Driver

  • Rated Impedance: 9 Ohm 

  • Sensitivity: 102 dB/mW 

  • Frequency response: 10Hz- 25KHz 

  • Rated power: 10 mW 

  • Maximum input power: 30 mW 

  • Plug: 3.5mm dual-channel plug 

  • Cable: 1.30 mm 18N OFC cable