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  • Astell&Kern x Jerry Harvey Audio
  • 8BA's - 2 low, 2 mid, 4 high
  • FreqPhase Technology / Stainless Steel Tube WaveGuide
  • Full metal jacket
  • Variable bass output
  • Provided 3.5mm / 2.5mm cables


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Product Details

Technical Features

Astell&Kern collaborates with Jerry Harvey Audio for the Siren Series Universal fit IEMs. This series of IEMs were designed to be used as a Mastering reference tool because the high drivers are designed for optimum top end extension with minimal distortion, the mid drivers are perfectly flat from 10Hz to 5kHz, and the low drivers are designed for steeper low pass and with virtually no distortion.

Third in the line-up is the Angie II, equipped with SoundrIVe Technology, this pair of IEMs uses Jerry Harvey Audio's proprietary quad drivers. Featuring an 8-BA-driver (dual low, dual mid, quad high) configuration, it offers the widest frequency range you'll ever hear. Utilising FreqPhase Technology and Stainless Steel Tube Waveguide, the FreqPhase corrects Time and Phase of multiple drivers while the Waveguide ensures each driver signal arrives within 0.01 milliseconds, resulting in a phase coherent IEM.


The Angie II utilises a 4-pin cable connection with a machined aluminium locking collar, providing a more secure and strong connection with the earpiece and also protects it from sweat and dust. Each body, cap and sound bore are machined from one solid block of aluminium with carbon fiber logo plate insert.

Other Functions

Adjustable from the cable is a variable bass output. Low frequency drivers are user-controlled, with an adjustable bass (0 - +10dB); frequency ranges from flat bass response up to +10dB (10Hz - 100Hz).

Driver  8 Balanced Armature per side 
Crossover  3-way crossover - dual low, dual mid, quad high 
Frequency Range           10Hz - 23kHz
Impedance 17 ohms
Sensitivity 117dB @ 1mW
Connector 4-pin cable connection
Terminator Unbalanced(3.5mm) / Balanced(2.5mm)
Noise Attenuation          ~26dB

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