Another review of OOR emerged in the last issue of the French hifi magazine Haute-Fidélité Magazine. It seems the French like our headphone amplifier very much.

“OOR shows an achieved design, carefully engineered and technically advanced despite a very compact size – which is quite impressive […] Experience behind the young brand Ferrum Audio is tremendous to achieve such a great performance”.

 

Want to get hold of the review? check out the website from hautefidelite-hifi.com