I can't speak for the RY4S as I never heard those, but I have 2 pairs of Qian39. While they have a decent amount of bass, the quality of bass is very low. Don't expect impact from beats, it's very loose. I like the Qian39, and I think it works well for older recordings of bands, gives bass guitars some meat, fleshes out the sound.I like to hear a decent subbass presence when listening to anything. With modern recordings I think Qian39 really falls flat, and also with electronic music. For bassy cheap earbuds, try HE150 sold by Penon. It's more, but still only 14$ and that includes a sturdy pouch. The bass quality is MUCH better than any other budget buds I tried, and I tried a few
. Out of the box they're nice, vocals a bit thin / recessed sounding but nice bass. If you EQ up the mids (I did by ear listening to music I was familiar with) - I gave it a good bump between 1 and 4K, and it fixed the big shortcoming of these buds for me. Also, if you really like bass, they take a LOT of bass EQ, you can really crank out decent subbass on these and they extend well. Quality of bass is much higher than Monk v1 (which had much better bass than Monk+ imo) and TY32v1, faster, more, and can be pushed WAY further before distorting. My EQ is kinda like this: \
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Really digging these, hope more people take the plunge because I'm curious if others hear the same I'm hearing (budget champ, though not for *everything*).