

Much more so on the 280s than the HD6XXs due to the 280 simply needing more correction. To review all the upgrade options and prices including the Educational deals, visit this page: SoundID Reference upgrade options. Morphit really flattens out the response very well on both sets of headphones.

Upgrade to SoundID Reference for Speakers and Headphones

SoundID Reference for Headphones can also be used in further upgrades. If you own Reference 3/4 Headphone Editions, you can use a direct upgrade path to SoundID Reference for Headphones. Upgrade to SoundID Reference for Headphones This article will guide you through possible upgrade paths. Nevertheless, you will have to keep in mind the upgrade compatibility of certain product versions. If you own Reference 3 or 4 you can upgrade it to SoundID reference.
