From what I've read, I'm pretty sure that SR60 and SR80 do share the same drivers. It's the cable, which is better in SR80, and the bowls which SR80 have which makes it better and more expensive.
RS1 have a bigger wooden enclosure than RS2, right? Maybe that could explain the small(from what I've read) difference in sound.
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H X-fi XtremeMusic -> ASIO -> Optical -> Gamma2 / Zero dac (OPA-Earth) -> CK2III / Zero internal amp -> RS1 "brown headband" / HD600 '02 / K501 .v1 / HF-2
P Cowon D2 - Head-Direct RE0
Other Fiio portable amp / Playstation SCHP-1002
Gone: DT990 '05 32ohm, HD650 with Oehlbach cable / Meier Corda Headfive / MS2i / DT880 '05 250ohm / RS1 "buttonless" '08 / LD MKIII / Audio-Technica ATH-AD2000
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