Astell & Kern Rosie In Ear Monitors

Astell & Kern

*Please check with our online customer service team or your local store for stock availability

The fourth offering in the Siren Series is aptly named after the iconic ACDC Song “Whole Lotta ROSIE”. Then legendary Lead Singer Bon Scott was inspired to pen this song after having a one night stand with a “rather large” Tasmanian women. Rosie is still in ACDC set today and a fan favorite.


    Full Metal Jacket

    Each Body, Cap and Sound bore are machined from one Solid Block of Aluminum 
    with Carbon Fiber Logo Plate insert.

    All new proprietary Driver designs

    This series of IEM’s were designed to be used as a Mastering reference tool because the high driver was designed for optimum top end extention with minimal distortion. The mid driver is perfectly flat from 10Hz to 5kHz. Low driver designed for steeper low pass and with virtualy no distortion.

    FreqPhase Technology / Stainless Steel Tube Waveguide

    FreqPhase corrects Time and Phase of multiple Drivers. The Waveguide ensures each driver signal arrives within 0.01 milliseconds, resulting in a Phase coherent IEM.

    Variable bass output, adjustable from cable

    User controlled low frequency drivers with the adjustable bass (0 - +15dB). 
    Frequency ranges from flat bass response up to +15dB (10Hz to 100Hz)

    4-pin Cable Connection with Machined Aluminum Locking Collar

    4-pin cable connection with Machined Aluminum Collar mechanism provides a more secure and strong connection with earpiece and will also help to protect it from sweat and dust.

    Hand Crafted IEM made in the USA

    Jerry Harvey Audio is proud to manufacture Rosie by using old school craftsmanship, while using the most cutting edge Technology.

    • Custom-made Proprietary Balanced Armature Drivers (6BA per side)
    • Powered by soundrIVe technology : Dual low, Dual Mid and Dual High balanced armature drivers per side
      Variable bass output, adjustable from cable : user controlled low frequency drivers with the adjustable bass (0 - +15dB). 
    • Frequency ranges from flat bass response up to +15dB (10Hz to 100Hz)
    • Integrated 4th Order crossover
    • Triple Bore with Stainless Steel Tubing
    • Noise Isolation -26dB
    • Moon Audio IEM cable for 3.5mm unbalance and 2.5mm balance cable both are included in the package
    • Type: Universal IEM
    • Driver Unit: Custom made BA - 6 per side
    • Frequency Response: 10 Hz to 23 kHz
    • Sensitivity: 117dB @ 1mW
    • Impedance: 17-ohms

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