"Unpacked the headphones I was very surprised about the nice material, made from wood, metal, leather nicely processed to nice looking (and sounding) headphones. And the most important part to me of course is the sound. As mastering engineer I need a neutral sounding counterpart for my monitoring system. The most headphones I have used need more or less EQ. I'm tending to avoid EQs in monitoring I tried the OLLO S4 and I'm very satisfied. A little too much in the upper bass compared to my monitors, but I can live with. They are the first headphones I can use without processing. And they work nicely together with my dedicated headphone amp. One thing I have noticed - the metal headband bracket tends to resonate, especially when you put on the headphones you can hear a hum. Two cable binding straps helped (see photo). Maybe there is a better solution, but it works.!"
The Engineer works for more than 20 years at the music business and has specialized for professional mastering since 2006. He works together with several independent artists and labels. Close cooperation with the artists and 100% satisfied customers is important to him.