The R03 is an upmarket professional-level earphone from well-known Chinese manufacturer ViSang. With quality materials used all-around, the build of the R03 is as venerable as the sound. Metal shells and a Cu-Ag alloy cable ensure longevity while the 10.7mm dynamic driver delivers crisp, powerful, and engaging sound. A uniquely patterned cable sheath provides flexibility and reduces cable...
“Let me preface this review by first letting you understand where I come from as I think that will give you some valuable perspective of my thoughts and opinions about this little gem. This also probably won't be a conventional review in that I describe in detail about the sound signature but I will make clear and efficient comparisons to well known IEMs. So I am a music producer and...” --Marc Lian
“A mids-focused specialist with a little bass thump and smooth, relaxed treble (recessed, but still has some detail). Not an especially engaging sound (a little too relaxed maybe). Decent across genres, but tend to congestion during busy/noisy passages. I find them particularly useful for low volume podcast legibility, though with podcasts that are poorly leveled, subject to intrusive volume...” --Raketen