Advanced AcousticWerkes

Advanced AcousticWerkes W500 Reference Hybrid Custom In-Ear Monitor

AAW is known for our exquisite hybrid drive technology, W500 is at the pinnacle of ourideology of combining the best traits out of dynamic and balanced armature drivers. Instead of creating high order RC crossover network, which usually causes chaotic phase shift and scrambled arrival timing, AAW uses a complete new approach called TrueXross TM to solve the classic coherence issue in hybrid earphones. The dynamic driver is individually tuned diaphragm wise and by further utilizing a physical low pass filter, it is to only function in minimal overlapping frequency range as opposed to the balanced armature driver. Coupled with delicate positional arrangement and front acoustic bore design, AAW is able to achieve improved coherence, minimized phase shift and optimized arrival timing of music signal. W500 is designed to be a true reference equipment, it offers powerful yet natural sub bass which you will never find in a full balanced armature setup. The 5 way crossover network with dedicated woofer, bass, mid, treble and super treble drivers offers amazing imaging of music instruments, detail retrieval and vocal representation. The high resolution music reproduction enables you to hear every timbre and nuance in your music. The 3D binaural sound-stage is imaged as realistic as a pair of high end headphone.

Suitable for stage performers, recording studio, audio engineers and the most critical audiophiles. Every AAW custom is customised to fill exact cavity of your ears. The CIEM experience is started with a trip to audiologist to have ear impressions taken and AAW will carefully craft the monitor shells mirroring their shapes. Delicately tuned and matched transducers are then mounted into the shells to create an one of a kind earpiece for you and you only.

Read the  Order FAQ  first, and click  HERE  for shell &  HERE for faceplate design color. New faceplate design  Atelier Series  is listed as well!


  • Reference Proprietary 9mm Dynamic Driver + 4 Balanced Armature Drivers
  • TruXross 5 Way Passive Crossover (Physical Low Pass Filter on Dynamic Bass Driver + Electronic 4 Way Passive Crossover)
  • Frequency Range 18Hz-23000Hz
  • Sensitivity 103.3db SPL @ 1mW
  • Impedance: 15 Ohm @ 1kHz
  • THD <= 0.2% @ 1kHz
  • Triple Sound Bore Design


    • Vocal
    • Guitar
    • Bass
    • Drum
    • Engineer
    • Audiophile

    Accessory and Warranty:

    • 46" Null Audio Symphony Tiburon Cable (4 Braided and Detachable)
    • AAW Carrying Case
    • Cleaning Brush & Cloth
    • Flight & 1/4" adapter
    • 60 Days Refit Guarantee
    • 2 Years Limited Warranty

      The lead-time for this product is around 4 weeks from the date ear impression is received, due to high order loading in holiday season.

      Ear Impression

      Ear impression service is available at our showroom (SGD50).

      For customers who cannot visit our showroom, please mail your ear impressions to:

      Null Audio
      #04-07 Pioneer Junction,
      03 Soon Lee Street,
      Singapore 627606

      Please contact for ear impression instructions.

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