Sorry for double-posting. I copy pasted this from another thread where RH-A30 was mentioned. Yeah, I have them and I had RH-300 before them. They are great. Sparkly (too sparkly?), well balanced. I wish I could compare them to Sennheiser HD595, but I don't have those anymore. I think in some ways they sound similar (I might be wrong though - I know how fragile and subjective our memory can be), I liked HD595 very much, but they were too veiled in the highs and I could not use them for judging mixes, but sheer music enjoyment was immense with them (as well as watching movies).
RH-300, on the other hand, was a little subdued in the highs and maybe a touch too exaggerated in the "mud" spectrum (around 500 hz), so overall presentation was a bit too "dark", if I can use this word. I have written a full blown comparison of 7 closed headphones way back, and wasn't quite sure which one is better: ATH-M50 or RH-300 (RH-300's sound signature seemed to match my Dynaudio BM15 studio monitors a bit more closely, except for less prominent highs on the phones). Anyway, since then I've sold RH-300 and got RH-A30 instead, and still, kept my M50 (these seem to work best for judging mixes (as a different perspective to monitors)). RH-A30 are more bright (maybe even too bright for my taste, but sometimes it's good - i.e. using them with the darker sounding albums), not "boomy" at all, although they have bass in them.
