Every since my review, I have been thinking how best to describe the difference between the Green and SRG Solo's that I heard with my ears, my gear and only having my HD-580's to use, also having never heard any other headphone gear. Not to mention my short, but sweet time listening to it.Now mind you, this is from 6 hours in, of the SRG's 72 hour journey to come up to full song, which I haven't heard, YET Big%20smile , until roughly 18 hours or so before I had to pry it out of my grubby mits, that the differences were becoming more apparent. I say this because it is quite clear I do not know ultimatley how the SRG would of sounded once said journey was completed.
All along I have kept frinding myself wanting to say that going directly from the Green to the SRG is like lifting a veil, looking through a hazy window to a clear one. But I think that does neither amp justice, and to me looks like a put down to the Green Solo, while also not giving enough information to whoever reads it.
But simply put, the SRG is more extended with better resolution and texture. Now notice, I say nothing about the bass here. I don't feel I can. Most importantly, because the SRG wasn't settled in yet as the SRG sound sig was the same as the Green at hour zero,warmer, to 18 hours or so,colder, and also because the SRG was using the PSU-1 and the Green the SMPS.
I use warmer and colder here only to describe the difference, not the product.