I got the elekit TU8600S in with most all upgrades in (only thing missing is VCAP CUTF, has odam instead). Tubes are: COSSOR Black Plate 300B, Western Electric ECC83/B759, RCA 12AU7 X 2 (clear Top).
If I have to summarize the amp's sound with 1 word it would be captivating. I wanted to warm up HD800S and inject some musicality into it... the Elekit... well lets just say I am lifting my jaw off the floor after hearing it.
I had some issues initially with a bit of noise and static. I fixed this by doing 2 things. First I took the XLRs out of my denafrips terminator that were connected to my he9, second I added to the tube cage. After doing this the elekit is insanely quiet with a cosmic void like blackground. I honestly think it sounds as quiet as the he9 and possibly even quieter than my pass speaker amp.
The first thing that hits you is this supremely musical tonality throughout the frequency...