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Astell&Kern

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Rosie

by Jerry Harvey Audio

Jerry Harvey Audio custom earphones world's leading creator and collaboration Astell&Kern

The Siren Series Universal fit IEMs plus Astell&Kern Playback allows you to hear the music how the Recording Artist and Mix Engineer intended.

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.

  • Custom-made Proprietary Balanced Armature Drivers (8BA per side)
  • Powered by soundrIVe technology : Dual low, Dual Mid and Quad 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

The 8 driver ROSIE is reminiscent of the legendary JH 13. Rosie has the extention and silky defined Mids of the JH 13 with the adjustable Bottom and weight of the Roxanne. Rosie is a game changer in IEMs below $1000.00.

by Jerry Harvey

The 1st reference/mastering IEM from Jerry Harvey Audio

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.

SoundrIVe Technology
(Quad Driver Technology)

Rosie was equipped with soundrIVe Technology, using Jerry Harvey Audio's proprietary quad drivers. 8 drivers [Dual Low, Dual Mid, Quad High] configuration that offers the widest frequency range you’ll ever hear.

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.

Additional Balance Cable
for Astell&Kern

AK380/AK320/AK240/AK120/AK100 provides a balance output with its specific 2.5mm 4pole terminal. Rosie is originally designed and tuned for the AK380 balance output and provides a balanced cable specially made to connect to the AK380.
This originally designed 3.5mm and 2.5mm cables are specially made by Moon Audio in USA and both are included in the package.

Used with AK380

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.

Specification

General Specifications
Model
Rosie
Type
Universal fit IEM
Driver Unit
Custom-made Proprietary Balanced Armature Drivers [8BA per side]
Frequency Response
10Hz to 23kHz
Input Sensitivity
117dB @ 1mW
Impedance
17 ohm
Freqphase time l phase WaveGuide
Jerry Harvey Audio Patent Number
Freqphase
US Patent 9,197,960
Jerry Harvey Audio locking Connector
US Patent 9,172,180
Adjustable Bass System
US Patent 9,161,170
Freqphase Control Method and System
US Patent 8,925,674
Dual driver dual high
US Patent 8,897,463
Dual Bore System
US Patent 8,567,555