Stereotech Metric 550 Acoustic Diffuser - The HiFi Shop
Stereotech Metric 550 Acoustic Diffuser - The HiFi Shop
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Stereotech Metric 550


Stereotech Metric 550

 Key performance features –

  • A correctly designed quadratic residue diffuser based around prime number 13.
  • Useful diffusion range extending down well into the lower midrange.
  • Made in Australia from Australian sourced premium grade materials and components.
  • Custom colour choice available for a small extra charge on orders of 12 and over.

Key convenience features –

  • Light, easy to handle and mount using either screws, glue or optional wall mounting kit.
  • More manageable size than most acoustic treatments, not overly deep.
  • Made in Australia – stock is readily available.
  • Lens is exactly square and dimensionally consistent making ganging of multiple diffusers easy and neat.



The Metric 550 is an accurately designed quadratic residue diffuser. This a diffuser design that genuinely diffuses sound waves that collide with it. Phase differences created by the different but mathematically related well depths cause sound over a broad spectrum of frequencies to reflect off in varying directions. This effect adds a sense of spaciousness and a smooth sweet nature to the treated rooms acoustic signature. Employing the correct amount of broad response diffusion to a listening environment avoids the ‘sucked out’, overly dry effect using too much narrow band absorption creates. Unfortunately almost all the so called ‘diffusers’ available on the market are just foam absorbers that may look vaguely like a real quadratic diffuser. The exceptions to this are quality products such as the Primacoustics ‘Razerblade’ or Artnovian’s “Lugano”. The former offering somewhat broader range performance than our ‘Metric 550’ due to it’s extra depth (nearly 100mm deeper) but at a considerable price and convenience premium. The latter offering similar performance to the Stereotech product but at a price and availability premium.

The Metric 550 quadratic diffuser by Stereotech Australia offers perhaps the most affordable serious diffusion acoustic treatment available today. Made in Brisbane Australia in the Stereotech factory from Australian sourced materials. Available in a variety of colours either ex stock or with a minimum of delay. Custom painting to suit your project is available at a small premium on orders of 12 or more pieces.


Dimensions – 550mm x 550mm x 105mm deep.

Weight – 5.5 Kg each.

Standard finish – White acoustic lens with satin black main diffuser body. Custom finishes available on acoustic lens and/or body at a small premium on order of 12 or more units.

Assembly – None, shipped fully assembled ready for mounting.

Designed and manufactured by Stereotech, in Brisbane, Australia.

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