audio-sound @ hatena

An audio review & news blog. The volume should not exceed 80 dB is recommended. I usually adhere to the safe-listening style by WHO. Please note that my aural impressions and interpretations of measurements are also made from a safe-listening style.

IMR BC 2023: Dual Dynamic Driver 2Pin 0.78mm HiFi Audiophile In-ear Earphone IEMs

IMR BC 2023

IMR BC 2023


IMR's newest in-ear monitor, the IMR BC 2023, has been released.



Many of you are bass heads and IMR have wanted to create the ultimate audiophile bass head IEM for a while.


The BC (bass cannon) is that very IEM!


Utilizing the all-new 2023 IMR ADLC Bass Dynamic driver combined with the all new midrange/treble ADLC (amorphous diamond like carbon) driver provides a bass heads dream IEM.


The sub bass is the most substantial and clear I could make with smooth and seamless transitions into the mid bass. Staging has plenty of height, width and depth.


The trouble with bass rich IEM is always maintaining a balance between that rich sound and detail. The new BC sets new standards for a bashed IEM and adds that detail magic and provides all the detail you could ask for with beautiful placement, luscious vocals and a beautiful treble.


If you are an audiophile bass head, could this be your end game?


Further enhancing your tuning capabilities when combined with the IMR acoustic tuning nozzles (included).


The drivers are encased in a light weight compact all anodized aluminum CNC chassis for long term durability and finish.


Hand assembled and driver matched for unrivalled finish and sound!


IMR BC 2023

IMR BC 2023
IMR BC 2023

IMR BC 2023



  • IMR 2023 generation Wide band ADLC dynamic driver featuring rare earth Neodymium motors with a composite diaphragm + 6mm ADLC (amorphous diamond like carbon) driver
  • 8 acoustic audio nozzles + 6 acoustic dampers
  • 2 Pin detachable cable (3.5mm/4.4mm balanced)
  • Frequency response: 8- 40kHz
  • Impedance: 32 Ohm
  • Sensitivity: 102 +/- 3DB
  • Plug: 24ct Gold plated 3.5mm Jack
  • Cable: 1.4M length OFC cable
  • 6.35mm Adapter
  • Carry case for all equipment
  • Huge selection of ear tips for the perfect fit


IMR BC 2023



  • IMR BC 2023
  • 3.5MM & 4.4mm cable
  • 4 pairs of silicone eartips
  • 2 pairs of foam eartips
  • 8 acoustic audio nozzles 
  • 6 acoustic dampers
  • 6.35mm Adapter
  • Carry case



Price & Availability

The IMR BC 2023 costs $369 and is now available from Penon Audio and others.


IMR BC 2023

IMR BC 2023
IMR BC 2023