I have been searching around here for days trying to figure this one out but am just getting more confused so I decided to ask..
I am looking to upgrade from my Little Dot Mk III. I like the amp but am finding that it doesn't have quite the oomph needed to comfortably drive my 600 ohm Beyerdynamic DT990 Pro headphones. The LD is rated at 350mW @ 300/600 ohms (I assume this is total output which means 175mW per channel?). The two interior gain switches are set to deliver maximum volume, still the LD huffs and puffs driving the Beyers.
So now I am looking for a headphone amp with more muscle. The Schiit Lyr is a contender with 330mW/channel however some reviews mention noise. The Schiit Mjolnir, rated at 425mW/channel would certainly do the job and is very highly reviewed but at $749 is more than I want to spend.
My budget is about $500, can you folks recommend some amps that will fill the bill in this price range?