Description

Sennheiser HD600 HD650 Copper Mass Loading Mod Kit

This is a shiny nickel plated copper weight, which adds mass to the rear of the driver and smooths the airflow slightly. By itself it gives more detailed bass and a little bit more sub bass. It should be combined with the removal of the foam disk on the rear of the driver. This will further improve the resolution of these already great headphones.

This version has been designed to compliment the design of the HD6xx. But will work just as well in the HD600, HD650 and HD580

The mod can be fitted with no special tools and can easily be removed in the future.

We have now also updated the kit to include 4 different foam inserts. These will allow you to tune the bass levels to your own personal taste. Keeping the extra bass clarity and detail you get from adding the mass loading weight.

See the audioreviews review here: https://www.audioreviews.org/custom-cans-hd-600-series-mod/

*foam colour shade may vary

Customer service and warranty

We know that you are paying a premium for our headphones. Which is why we make our headphones durable and reliable. But in the unlikely event that you do have an issue with them, please get in contact with us. We are happy to help you. We offer a full 2 year ‘return to base’ warranty, and we keep all spare parts in stock, so that we can also send replacement parts if necessary. Outside of the warranty period we still offer repairs on all our products for a fair price.

International orders

Close to 70% of our customers are outside of the UK, so we have a lot of experience with international orders and worldwide shipping. All packages over £50 have a form of international tracking.

– European packages normally take 4-6 days.
– US, AUS and Canada packages normally take 7-10 Days.
– Packages sent to the rest of the world can vary depending on local postal services.
– Packages shipping outside of the EU may be delayed in customs, but the tracking system should keep you updated of its progress.

(For customers outside of the UK only) Unfortunately, customs duties and fees may be charged when ordering from outside of the UK. This is outside of our control. we are NOT responsible for import duties. We will NOT write false information on a customs document in order to lower fees. All items have the UK tax removed and this will need to be paid by yourself when your item arrives at your local customs office. For a smoother process, please buy from our eBay store where VAT is paid at the same time: https://www.ebay.co.uk/str/customcans