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JH Audio

JH Audio Astell&Kern Rosie In Ear Monitors (Universal IEM)

The Rosie is the fourth universal IEM in the Siren Series collaboration between JH Audio and Astell & Kern.  The Siren Series iems allow you to hear the music how the Recording Artist and Mix Engineer intended.


  • Custom-made Proprietary Balanced Armature Drivers
  • Powered by soundrIVe technology
  • Variable bass output, adjustable from cable
  • Frequency ranges (10Hz to 100Hz)
  • Integrated 4th Order crossover
  • Triple Bore with Stainless Steel Tubing
  • Noise Isolation -26dB
  • 3.5mm unbalanced and 2.5mm balanced cables included


The 1st reference/mastering IEM from Jerry Harvey Audio

AK Rosie Full metal jacket

Full Metal Jacket

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

AK Rosie Siren Series

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.

AK Rosie Freqphase

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)

AK Rosie IEM

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.