Free UK DeliveryFinance at checkout30 Day ReturnsWorldwide DeliveryAudio Affair Facebook

Spring Bargains

Custom Design Quadraphonic iRAP Isolation Platform

Enquiry/price check? Click here SKU: CDQUADiRAP
Ex VAT: £349.17

Available - please select an option below

Condition: Brand new in original retail packaging

* Required Fields


Earn 419 loyalty points when you order this item.

You can earn loyalty points on every order you place on this website. If you select to create an account at checkout, your loyalty points will be saved and you can use these to discount future orders online. 


Each product page shows you how many loyalty points you can earn when you order that item. Essentially, for each £1 you spend, you earn 1 loyalty point and for every 1 point earned, 1p will be added to your loyalty point balance (this is the same as some of the UK's biggest loyalty point cards). So for example, if you spend £500, you'll earn 500 loyalty points which can be used to discount a future order by £5.00. 


Read more

Get a trade in quote

To reduce the price of this item, we may be able to accept your old equipment as a trade in (part exchange).

Please send us your details along with details of the item(s) you'd like to trade in and we'll come back to you within 2 working days (but usually a little sooner) with a quote.

Send us a message now

Do you have any questions on this item you'd like us to answer? Or have you seen it cheaper elsewhere and would like us to see if we can beat it? Send us the details below and we'll come back to you quickly (usually within 24hrs, sooner during opening hours)


Warranty length 1 Year
Brand Custom Design

Tech Specs

- Quadraphonic iRAP 6mm Acoustic Steel Base Plinth 510mm wide x 380mm depth
- Quadraphonic iRAP 6mm Acoustic Aluminum Plinth 430mm wide x 300mm depth or 430mm x - 340mm optional
- M8 Nickle Plated allen key adjustable isolation spikes suppiled as standard
- M8 Nickle Plated Spikes cover Supplied as standard
- 4 Soild Aluminum Isolation feet supplied as standard available in Brushed Chrome, - Chrome or Black
- 10mm steel Isolation Bearing supplied as standard

Product Description

Custom Design Quadraphonic iRAP Isolation Platform fit under any hi-fi component to absorb resonance and prevent the surface absorbing any sound.

With over 30 years experience designing and manufacturing high quality hi-fi components and accessories, Custom Design's isolation platforms provide audio enthusiasts with a reliable and discrete solution to unwanted resonances.

The Quadraphonic iRAP (Isolation-Resonance-Absorbing-Platform are made from Custom Design's highly acclaimed Acoustic Steel and Acoustic Aluminium. These materials are designed to absorb and dampen resonance vibrations and efficiently isolate your equipment.

It's patent polymer system converts the unwanted resonances to negligible heat, which provides significant improvements in clarity, detail and separation. The result is improved dynamics, especially the bass performance which enjoys better accuracy, precision and depth.

Customer Reviews

  • Faysal Riaz

    11 Apr 2023

    So impressed with the Quadraphonic iRAP that I moved my source out to the side on a new rack and used it with my Naim streamer and PSU.

    With the streamer the Quadraphonics made a huge improvement - really cleaned the sound, increased details, moved the soundstage more centre and deeper, filled and lowered the bass, and added a lot more punch. With the PSU, the improvement was also dramatic. The sound is far more involving, clean, crisp, detailed, very lifelike, soundstage moved forward and deeper like a 3D cube, more speed and highly effortless control of the fine details, relentless but controlled sound, and a thunderous controlled slam attack. Clearly notice how lifelike the sound is with home cinema use.

    Using Quadraphonics finally on a Naim source (and now in a full system) is a massive night and day improvement just like getting a new speaker.

    For the third time - I highly recommend the Quadraphonic iRAP.
  • Faysal Riaz

    22 Sep 2022

    Got another two Quadraphonic iRaps for my monoblocks. These were previously on Isoacoustic Oreos due to space limitations. For the iRaps, I changed the spike and shoe feet to an upside M8 bolt with a small washer, and a bolt plastic cap as the shoe, to act as the feet. This made it all only about 3cm high like the added height with the Oreos. Quadraphonic iRaps are more expensive than the Oreos, but the sound quality is clearly better - a far cleaner crisp sound, deeper soundstage, more fluid dynamics and low details, are the most obvious benefits over Isoacoustic Oreos.

    Highly recommend the Quadraphonic iRap.
  • Faysal Riaz

    9 Jul 2022

    Use two Quadraphonic iRaps on a Naim preamp and PSU. For the preamp it really cleaned the sound and brought out new low details. For the PSU it increased the power, dynamics, control and bass detail. Upgrades with the Quadraphonic iRaps (steel and aluminium) are far better than the Isoacoustics platforms (wood) - plus they can come in all black if asked and it takes virtually any unit weight unlike the Isoacoustics variation in wood and colour for bigger weights. Crazy to think a shelf upgrades the sound so much but it's nonetheless true. I will try to fit more where i can.

    Highly recommend the Quadraphonic iRap ????
  • Write Your Own Review

    Write a Review

    • 1 star 2 stars 3 stars 4 stars 5 stars
      1 Star 2 Star 3 Star 4 Star 5 Star

Contact Details

Customer Services Landline
0121 224 7350/7351

Sales Landline
0121 224 7300/7401

Sales WhatsApp
07706 203859

As Featured/Seen In

The Telegraph
Gadget Show
BBC Midlands Today
Birmingham Mail
Hi-Fi Choice Magazine

Mobile Site

Copyright © Audio Affair (Alexander Michael LTD) 2006-2024. Vat No. 913183835. All rights reserved.