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Professional studio sound quality

■ A new take on our pioneering SMB-01 ■

A decade after its first release, PHONON’s pioneering SMB-01 is back and better than ever.

Enjoy the natural ultra-low frequency range and the acoustic space created by PHONON’s unique technology.

The free-edge structure of the diaphragm provides a high response and low energy loss, resulting in a wide dynamic range and a frequency response that fully covers the high-resolution band.

With PHONON’S carefully cultivated tuning technology, you can reproduce sound closer to the raw and achieve the best acoustic balance, regardless of music genre.

Enjoy professional studio sound with the SMB-01.


  • Exchangeable ear plates for use with both enclosed-dynamic and semi-open (REP-11 sold separately) headphone types
  • Free edge 40mm driver
  • comfort and sound insulation ear pads
  • Detachable cable (4-wire LR independent ground connection)
  • Case included


Type Enclosed dynamic / Semi-open (as option)
Driver Φ40mm
Sensitivity 101dB/mW
Frequency response 10〜40,000Hz
Maximum Power 1,000mW
Impedance 32Ω
Weight 324g (Excluding wires)
Plug Φ6.3 / Φ3.5mm  gold-plated stereo 2 ways plug
Cable 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)