We attach weights in strategic places on the driver to give it more mass to push against – this gives a little more bass extension, and cleans up the mid bass. This helps make them sound less boomy and gives more bass detail. We also change the damping material in the cup to absorb more sound inside the cup, so less bounces back through the driver. this also helps with clarity and makes them sound a little more open / less boxy.

About us

We have been modifying and customising headphones for DJs and other audio professionals for many years (starting back in 2009), during which we have gone on to win several awards. We are official Sennheiser and Beyerdynamic partners, so we always have the latest version of the HD25 and spare parts in stock. All of our custom headphones are airbrushed and painted by hand. We spend a great deal of time making sure each pair gets a finish that will last in a professional environment for years, which is no small feat.

How our custom HD25 headphones are made

If you are interested in seeing what goes into making a pair of our custom headphones, you can watch this video on our Youtube channel.

Sennheiser HD25 specifications

• Frequency response (headphones)

  16 – 22000 Hz

• THD, total harmonic distortion

  < 0,3 %

• Contact pressure

  ~ 2,5 N

• Ear coupling

  supra-aural

• Jack plug

  3,5/6,3 mm stereo

• Cable length

  1,5 m (HD 25 Plus: 1-3 m)

• Transducer principle

  dynamic, closed

• Weight

  without cable: ~ 140 g

• Nominal impedance

  70 Ω

• Load rating

  200 mW

• Max. Sound pressure level (active)

  120 dB

Customer service and warranty

We know that you are paying a premium for our headphones and that they are a very important part of your life. Our headphones are made durable and reliable, but in the unlikely event that you do have an issue with them, please get in contact with us and we will make sure that we get you sorted out. We offer a full 2 year ‘return to base’ warranty, and we keep all of the 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 will 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.

Custom Cans UK VAT number: 141 987 390