Originally Posted by CoiL
DT990 should be very good cans and its great you don`t have to sell them. Pairing amp/dac with cans is actually pain in the ass, luckily my modded HD-681 mkII is also very good match with Aune T1, I also enjoy Amperex orange GAC very much with them. For me, HD-681 mkII + Aune T1 is ultimate bang-for-a-buck!
Btw, if you get your hands on Ultron PCC189 then certainly try this tube with DT990.
You can use Aune T1 only as solid state DAC too, just use RCA line-in, it excludes tube from audio chain. But for me, Aune T1 loses it`s "magic" then.
If you want to improve Aune T1 sound, tube rolling is one way to go (most of best tubes for aune t1 have been sorted out in this thread already), to find good match for your music and cans.
But maybe it can be also cans mismatch, but unlikely, most well known cans seem to fit great with Aune T1.
I totally understand what you're saying, and my listening habits have already been discussed in this thread extensively and I've picked up another tube based on the comments of your awesome test efforts. This is what lead me to the "what's next?" question. I definitely could get better cans or better speakers, but it seems to me now that if I were to say upgrade, I'd have to replace the Aune entirely and go for a amp & dac stack. The interesting part of the T1 definitely is it's ability to swap tubes out for customizing the sound to your needs, but being a combo unit in such a small package there are definitely sacrifices made in the design process.
I'm aesthetic freak & a learning hobbyist, so I'm actually leaning towards exploring the Schiit Modi & Magni combo that has been reviewed on another thread, but I'll have to read more really to get a better feel to see how well it'll power some desktop speakers too. Errr this never ending quest to better the sound is scary haha thanks again guys :)