OK, I did *some* listening, and I need to do more.
1st impressions are that the SR80i's and the MS-1i's are much more similar than they are different. I tried to focus on the highs 1st, because that's where the consensus seems to be in terms of differences, but in the listening I did tonight, I couldn't hear many differences there.
What stood out though, is that I felt the SR80i's have more bass. But don't pin me down yet to whether it's a mid-bass boost, or lower extension (vs the MS-1i's). That's why I need to listen some more.
Now, let me tell you about some other cans I've listened to lately just so in the big world of headphone listening, you know where I'm coming from.
I started with PX-100's. The old model (although mine are about 2 years old). I love these babies. Detailed without being too harsh or shrill, but yes, I think these have too much bass, a pronounced mid-bass hump where I know exactly what to do to EQ that hump out. (Also, I get to listen 3 - 4 hrs a day at work, plus 1 to 1.5 hrs during lunch. I'm lucky I get to spend that much time with headphones on. So I also know what works for extended listening too. Love the Grados. Just bend the metal headband.
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OK, time to move up from the PX-100's. I've looked at and researched probably 50 sets over the last year or so. I spent 2 hours at a local place auditioning the SR60i's, SR80i's, and the SR125i's. (They also had 325s there and RS1's or something?) Got the 80's 1st. (The 60i's do not have enough bass. I don't know why anyone would buy these if they directly compared to the 80i's 1st. I also don't understand the rave reviews these get either. The 80's have *deeper* bass, but not much of a mid-bass hump IMO. They are very balanced I think, but I do think they could be a tad tamer on top.)
Anyway, had the 80i's for a week, before I went back and swapped them for the SR125i's. I can't go higher because I don't like the open earcups the higher models have. And I'm too concerned that each model is engineered with its particular ear pads to get the 225i's, for example, and swap to the full face ear pads. Now, I don't think the 125i's sound that much different than the 80i's. Much more similar than different. Big jump from the 60i's to the 80i's, small jump from the 80i's to the 125i's, IMO.
OK, but I'd still like a *different* pair. So ... I have a list of criteria, and "work-friendly" is one of them. I looked at the ATH-AD700's as a prime alternative but they are just to overbearing for work. (Btw, I know the Grados leak, and they leak a lot, but I've never had anyone complain at work. And I sometimes let the volume knob drift higher and higher. Either I have really nice neighbors, or our cubes are pretty good at sound isolation.)
Looked at a lot of models. A long time ago I had a cheap set of on-ear Sony's that I always liked. Ear pads disentegrated, tossed them, but I always remembered liking them. Tried the 7502's. Garbage. Didn't know this until after I bought them, but they are rolled off top and bottom for only a 60 Hz to 16 kHz freq response. Good for talk radio maybe, but not much else. So I tried the 7505's after that. These *almost* stuck with me. But I felt there was too much bass, and the treble was way too subdued. I still have the V6's/7506's on my radar though. But my impression is that the 7505's and V6/7506 is the same except on-ear vs around-ear.
Oh, tried the Denon AHD1001K. Too much bass. I was told that gets better after burn in, but life's too short. I have the Grado's, loved them, they didn't need burning in, so I wasn't going to subject myself to the bass of the Denon's waiting for it to get better.
Also tried the Sennheiser HD-238's. Too much bass. Even "worse" than the PX-100's. I used these at lunch for a while, and I came to hate the earpads too. The leather gets too hot and they just are plain uncomfortable I think, vs the PX-100's. So I switched back to the PX-100's for lunch. Keeping an eye on a deal for the PX-100 ii's though.
So there you have it.
I need to listen some more between the SR80i's and the MS-1i's though. I was surprised they sounded as close as they did. Oh, neither of those sets are really burned in. (I use the SR125i's at work for hard core extended listening for pleasure.) The SR80i's and MS-1i's are meant for short term listening at home between different CD masterings. (Old US, West German, Japanese, MFSL's, DCC's, AF's, Targets, etc. If you're familiar.) So for my home cans, I really want FLAT freq response. So as much as I love the SR80i's, I was kind of looking forward to tamer highs with the Alessandros, but that's not what I'm hearing so far.