I hope some of you enjoy the summation of my findings about my SR225e's it's taken me a long time to reach this conclusion
as to why I generally prefer the SR225E over the GS1000i
I’m a low to medium volume listener, ....this is crucial to this post
I love a headphone that portrays all artist's impact even at very low volumes
The GS1000i is a very smooth sounding headphone, very resolving, weighty yet smooth
It also requires much more juice to sound good, it needs at least medium volume to sound right whereas 225E even sounds great at low volume (of course the latter is much more efficient, requires much less power for the same volume). Also, once I reversed the cushions on the 225e's and try to avoid having my reading glasses arms behind my ears, very comfortable and lighter in weight than the GS1000i's.
I think of the 225e as the ultimate version the SR80e - the sound Grado ultimately intended, from the design/materials was the 225(e), then came out with the lower cost models as more affordable yet somewhat lower performance. (I have the 80e and love them as a low cost, take everywhere Grado!)
The 225e has some sharpness/grit to the sound, like turning up the sharpness filter in PhotoShop just to the point where resolution and detail sounds perfect at lower volumes
At customary higher volumes, such as many/most listeners enjoy, the sound can sound harsh - I believe that Grado optimizes their headphones to sound best at below loud volumes, especially lower to low-medium (at least for the Grado's in my experience)
...this helps to explain the polarizing opinions on Grado’s - those that find the highs are piercing, sound is too sharp, etc. are listening at much higher levels than they were designed for.
When listening to pop/rock/jazz at lower volumes through my setup, the 225e is lacking NOTHING…all of the weight, tonal colour, intimacy, emotion, soul, coherence, you name it is there
…NOTHING missing!
Technically there are characteristics that can be heard but these are quickly forgotten as I get immersed in the music!
The overall sound/musical quality, sonic weight and balance of performance is such my mind/brain stops analyzing and I find the original musical performance there, in all of its qualities.
Even though the GS1000i is technically a better performer, I usually reach for them when I want a break/something different….maybe 15% of the time. I’m glad I have them but if had to give one up, it would be the GS1000i’s (I’m keeping them though and love them!).
Having said the above, it’s crucial to listen for yourself, they appeal to my tastes, system and listening levels but won’t for everybody….YMMV!