Apologies for not responding. So, I really like the GR-1's. I don't find them too bassy, even with no tone adjustments. They're comfortable and well-built. I already have the older version of the HE400S, the Massdrop HE4xx, and I agree that they sound better with good electronics.
My next 'phones will likely be the new Meze $700 cans. I love the 99 Classics as well.