OLLO S4R Recording Headphones. Are They Any Good? brandonshireMay 25, 2020MixingLeave a Comment In this video, I compare a set of OLLO S4R Recording headphones against the OLLO S4 Mixing Headphones. Watch my review of the OLLO S4’s hereWatch my review of the Ramsa WR-130 hereSupport this channel on PatreonBuy your own set of OLLO S4R Recording Headphones