Stereotech Stereotech Metric 550 Acoustic Diffuser Acoustic Panels
Stereotech Stereotech Metric 550 Acoustic Diffuser Acoustic Panels

Stereotech Metric 550 Acoustic Diffuser

Regular price$399.00

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  • Free Delivery Australia Wide
  • Local Australian Warranty
  • 1800 100 998 For Assistance

We take pride in our customer service and shipping times. Most products will ship within 1-2 business days. If there are any potential delays with products in your order, we will contact you.

All orders now come with free shipping Australia Wide.

We use a variety of shipping methods depending on the types of items purchased and their delivery location. This helps to ensure your items arrive safely and in a timely manner. If you are on a tight deadline or would like to know an estimated delivery date for your order, contact our friendly staff and they will be happy to assist.

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.


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

Weight – 5.5 Kg each.

Carton dimensions – 575mm wide x 575mm deep x 400mm high (carton of 3 units)

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.


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.

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Customer Reviews

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CHT Solutions has been very prompt to respond and ship the items. I will never hesitate to buy from them again. More power to CHT Solutions!

Richard Y.
Thornleigh, NSW

CHT delivery was incredibly fast, Many thanks all for such an easy purchase process and super fast delivery. 5 stars from me

Chris N.
Malaga, WA

Buying from CHT Solutions was easy and their price was great and I would recommend then to anyone seeking good Hi Fi equipment.

John L.
Woonona, NSW

Fast delivery and great products. Would recommend them to anyone needing great service for sound advice.

Oscar F.
Truganina, VIC

CHT delivered the unit to South Australia within a couple of days. Amazing! Their phone customer service was professional and courteous. Will happily purchase from them again

Robert F.
Tranmere, SA