Long time lurker/ researcher, first time poster because my T1 just came in this afternoon. I paid 185.88 for a version with a 6922-EH tube.
I got an E7 for christmas to clean up the audio from my laptop and desktop. After using it with a variety of super cheap IEMs, I picked up the Sennheiser HD595 for cheap on the for sale forums here. Obviously this was another huge jump in SQ for me, but the bass was always a little lacking for me on the E7. A common complaint with the 595's, so I kind of expected it before I bought the 595's.
I do plan on getting a good setup... eventually, but it will take so long for me to save up I decided that the T1 would be a great bang for the buck investment, and the output/inputs will allow me to build a higher end system one piece at a time.
On the T1 I feel my 595's responding to the better amp, and the bass is definitely better. I don't have anything else to compare it to really but overall it just feels more natural and refined.
I also have a pair 1964 Ears V3 CIEMs for monitoring (drummer/guitar/bassist/vocalist here). They are more musical than neutral or analytical which makes them good monitors when you don't have super high end equipment.
Anyways, the V3 sound very good with the Aune. I typically use them when listening to more energetic music as they have a bit of a bass hump. The T1 has slightly less noise than the E7, which is very good with sensitive customs, so the fact that the T1 is near silent but more powerful makes me happy.
Overall I feel I have a great budget system on my hands with the 595 and Aune. I'd love to demo some higher end phones in the future but this combo should serve me very well.