Either going to get the HD650 or a DT880/DT990.
Currently, I have an E7 which has been fine on my M50, but from what I understand - these upgraded headphones are going to require more. I'm mainly going to play off my computer.
I can get the E09K for $110 and plug my E7 into that.
I can get the O2 + ODAC (both separate pieces - so I can use them separately too) for about $320. (Is it worth effectively spending x3 over the FiiO?)
I can get the Audioquest DragonFly for $250. But even though it has an amp, I might need another amp too right?
Or, my friend suggested the Little Dot i+ amp for about $120. I'd still need a DAC so either my E7 or the ODAC?