Yes, these haven't changed in price for at least year. No deal here.
They are different. The custom 1 pros are more similar to the dt770, as both are closed back, which means they don't let sound in or out as they are largely sealed (closed). The custom 1 pros have a variable bass port, allowing you to choose how bassy they sound, whereas the dt770 has a fixed port. I think that's the main difference and I opted for the 770s. The dt990 is open back, thanks to the slits in the cups. This means they are intended for indoor use only, otherwise the noise of everything else will ruin your listening experience and everyone around you will hear your music. Better is an interesting question then - I'd expect to enjoy the custom 1s when I don't want to hear anything else and the 990s for an entirely different experience, likely having a wider sound to them as though the music isn't right by your head.
always this price on amazon
No problem for the t1
I have a pair of Grado 325i's and some Beoplay H7's. With both of those being low impedance, what can I expect with these? I have an Aune T1 headphone amp. Any advice appreciated!