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SMB-01L Professional Monitoring Headphones

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PHONON SMB-01L Professional Monitoring Headphones

big studio sound in your ears


Isao Kumano, one of Japan’s top mastering engineers, crafted the innovative SMB-01L with audio professionals in mind. His goal: reproduce large studio-monitoring sound in a headphone.

The new revolutionary SMB-01L utilizes a 50mm diameter driver unit, further enhancing PHONON’s signature natural ultra-low range bass-monitoring capabilities. The high-end unit features a powerful magnetic circuit and a diaphragm with a “free edge” structure that brings a quantum improvement to the reproduction of raw sounds, increasing presence andachieving wide high-resolution dynamic frequency range playback.

PHONON extensively tested various reference materials during the developmental stages to ensure the best acoustic balance for all genres of music.

With PHONON’s unique tuning method, the SMB-01L achieves a stunning acoustic balance and a sound that closely resembles that of large high-end audio monitoring systems.

The SMB-01L will be your new go-to for reference headphones.


  • Exchangeable ear plates for use with both enclosed-dynamic and semi-open headphone types
  • Free edge 50mm driver
  • High-quality comfort sheepskin ear pads
  • Detachable cable (4-wire LR independent ground connection)
  • Case included

SMB-01L Specifications

Type Enclosed dynamic / Semi-open
Driver Φ50mm
Sensitivity 102dB/mW
Frequency response 10〜40,000Hz
Maximum Power 1,000mW
Impedance 32Ω
Weight 343g (Excluding wires)
Plug Φ6.3 / Φ3.5mm gold-plated stereo 2 ways plug
Cable Detachable 3m (4 wires-type L/R independent ground wire connection)

Instructions for use

  1. Connect to music player
  2. Enjoy at an appropriate volume to protect ears


  • Always use at an appropriate volume that will not damage ears
  • Be careful not to catch fingers between the parts
  • Do not disassemble or modify
  • Do not drop or strike against hard objects
  • Hold the plug when handling the cord to prevent disconnection and accidents
  • Please be conscious of volume in public and do not disturb other people
  • Replace ears pads regularly to ensure best sound quality (ear pads deteriorate with use and storage)