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Astell&Kern Rosie 6-Driver In-Ear Earphone

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Astell&Kern Rosie 6-Driver In-Ear Earphone

  • Machined aluminium body and cap with carbon fiber logo insert.

  • Designed to be a reference/mastering IEM.

  • Integrated 4th Order crossover

  • Custom-made Proprietary BA drivers (2 Low, 2 Mid, 2 High drivers per side)

  • FreqPhase Technology

  • Variable BASS output Adjustable cable (0 to +15 dB of adjustment, in the 10Hz to 100Hz range)

  • Enhanced 4-pin Cable Connection with Machined Aluminum Locking Collar, now redesigned and made by Moon Audio

  • Additional balance cable for Astell&Kern players

  • Hand Crafted IEM made in the USA



Rosie Ⅱ 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.

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.

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 - +13dB). Frequency ranges from flat bass response up to +10dB (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/AK120Ⅱ/AK100Ⅱ provides a balance output with its specific 2.5mm 4pole terminal. LaylaⅡ 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.

Hand Crafted IEM made in the USA
Jerry Harvey Audio is proud to manufacture LaylaⅡ by using old school craftsmanship, while using the most cutting edge Technology.

Technical Specifications

Additional Information

Package Contents
  • iRiver Astell&Kern Rosie 6-Drivers Universal In-Ear Earphone
  • 3.5mm unbalanced cable
  • 2.5mm balanced cable
  • Machined Billet Aluminium carrying case
  • 6 pairs of eartips
  • Ear wax removal toool
  • Bass adjustment tool
Colour Black
Warranty 1 year (local)
Availability Available
Product Type Earphone
Style/Type Universal In-Ear
Driver Configuration 6-Drivers (Balanced Armature)
Frequency Response (Hz) 10Hz to 23kHz
Impedance (Ω) 17 ohm
Sensitivity 117dB @ 1mW
Headphone Design Closed-Back
Cable Style Detachable (Customisable, IM, E/LS, others)
Input Connectivity 3.5mm stereo
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