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LEAR LCM-A1d MKII 1 Dynamic Driver Custom In-Ear Monitor

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LEAR LCM-A1d MKII 1 Dynamic Driver Custom In-Ear Monitor

  • Updated LCM-A1d Design, featuring improved internal metallic acoustic structure & metallic sound bore!

  • 10mm CCAW LEAR Custom Tuned Dynamic Driver

  • 20dB of user adjustable bass response, from flat response to subwoofer-like rumbling!

  • Incredible cost-to-performance ratio, suitable for wide variety of genres

  • Finest quality Viablue 4% Silver solder & LEAR C8 Copper & SPC internal wiring

  • Exotic faceplate options such as Denim and True Texture 3D

  • Industry leading "Semi-Hard" Shell material also available for improved comfort & shell durability!

  • Designed, built and tuned in Hong Kong

  • Free Refit service: 30 days + 11 Months (Excluding remake of shell)

Demo unit available for auditioning at our office!
Click to read the FAQs and check out the available Colour & Artwork options!


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After two years of refining with different opinions, we are proud to release the LCM A1d MK II - LEAR’s best cost-effective dynamic custom-made earphones!
With the basis of the first generation A1d, A1d MKII has the best tuning amongst its price range. The "A" represents its "Adjustable" tuning, not to mention its custom fitting that provides a personalised comfortable fit and sound isolation. Therefore, the 270º knob enables user to adjust the tuning on their LCM-A1d MKII is a 270º, now users can have their own personalised tuning through this design! For example, you can get a reference tuning on one side, with the bass boosted on the other end!

The structure of the MKII has been improved from the first, which the precisely designed metallic acoustic coupler and sound bore, alongside with the C8 Libra grade high quality pure copper and silver plated copper interconnection wires soldered with Viablue Hi-Fi grade 4% lead free silver solder to enhance the overall sound quality.

This is how we have the crystal clear and detailed sound is achieved on the MKII!

LEAR LCM-A1d MKII Measurements
Frequency Response (Blue: Knob at 8 O'clock, Red: Knob at 4 O'clock)

THD (Reference 94dB @ 1k Hz)


Impedance (Knob at 4 O'clock position)

Customization Options:

Technical Specifications

Additional Information

Colour Multi-coloured
Warranty 1 year (local)
Product Weight (g) 200
Country of Manufacture Hong Kong SAR China
Availability Available
Product Type Earphone
Style/Type Custom In-Ear (CIEM)
Driver Configuration 1-Driver (Dynamic)
Frequency Response (Hz) 20~20kHz
Impedance (Ω) 33ohm @1000 Hz (Adjustable knob at 4'o clock maximum position)
Sensitivity 110dB @1mW ((Adjustable knob at 4'o clock maximum position )
Microphone None
Cable Style Detachable (Customisable, IM, E/LS, others)
Input Connectivity 3.5mm stereo
Cable Length (cm) 120
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