I can't speak directly to the GS2000 and GS3000. I have listened to them at a local retailer and offer my impressions of the GS1000 presuming that the progression of the presentation within the GS family is valid. I have the GS1000i and the SR325e, and the GS1000 is (as expected) a significant step forward. The sound of the GS1000 has a richness and fullness that the SR325 cannot match. While I never found the SR325 to be harsh, the highs are certainly more forward than the GS1000. Although I still occasionally enjoy, the SR325, I am reaching for the GS1000 far more often than any of my other Grado headphones. End game? Who knows. It took me a long time to get to the GS1000 but at the moment I am very satisfied.
The GS1000i, as far as I'm concerned, is a TOTL headphone and I don't think I'll ever
want anything better. I had the 325i and 325e, replaced the latter when it broke
for the second time with the SR225e, which I slightly prefer - similar
but highs somewhat smoother
- but both the 225e3 and 325e have almost the same sound in my opinion.
*****....please keep in mind that I listen mostly at lowish levels.*******
I would describe the GS1000i's sound as having a very realistic soundstage (whereas
the 225e has decent imaging but has a smaller and a somewhat flat soundstage), realistic imaging -
the shapes and positions of the images are life-like and a lot better -
the bass goes very deep (still benefits from a slight eq up in the bass IMHO,
as do most Grado's). Everything just sounds top quality, detailed and really musical -
more like listening to a pair of electrostatic speakers in a top quality system
- such as the Quad ESL speakers I heard at an audio show a few years ago -
than the typical sound from most headphones.
.
Although the GS1000i is superb, I find myself reaching for the 225e's more often.
Although they sound leaner, smaller sound stage, a bit of grain and imaging compression
I'm really pleased with their musicality, despite looking and feeling like a budget pair -
their musical quality on most recordings is great!
Also the 225e's are lighter and more compact (using with reverse cushion mod)
as well as much more efficient - so my dac/amp battery lasts longer. Musically,
very satisfying to me, on the majority of recordings that I listen to.
I've recently bought the GR10e IEM's after break-in am amazed at their sound and
musical quality. Like the 225e's they don't look or feel like much, but listening mostly to
high quality pop recordings I'm totally immersed in the artist's performance. I would
say sound-wise and musically quite a step up from the SR225e - which I still love and use
a lot - and not far from the GS1000i's. Also, the bass quality and detail I would say are
much better than the SR225e's (or from memory, that of the SR325e's).
I'm not interested in supplementing or replacing any of my Grado's and love having
each in rotation.
...my Grado's have a very special musical quality which I totally enjoy!.