possible but i am sensitive to mid to highs. if its too thin or strident, i will hear it immediately.  

- windows 10 PC using Asus STX sound card with SPDIF out  - Benchmark DAC2 HGC modded extensively with outboard power supply - Dynaudio BM-5A mkII with iso acoustic Aperta stands, Rythmik F12SE sub - Gustard H10 amp to Hifiman HE-560 (not tested) - acrolink signal cables digital, XLR...

had a similar conclusion using coaxial ie thin sounding or brightness in the highs but there is improvement with the sound staging. smoother highs only happened after 3 weeks in constant use 

YOU ARE RIGHT!    the highs have settled after around 3 weeks! just finally getting the tonality right today

thanks for the feedback. tot mine did not work in my system. still getting harsh highs

  try the IFI using another power outlet. currently am using IFI along my computer power supply. audio equipment is plug into a power conditioner. am using PC & STX combo too

day 1 initially had problems with computer. seemingly resolved after reboot mashed sound with tonality leaning towards lean hated it and wanted yank it out tell myself it will take quite a few days to cook it up (remind me of Gustard H10)   day 2 tonality improved and bass slowly...

thanks. will ask them 

dun think there is any chance for me to test in Singapore and hence the query. for guys who bought them, any feedback so far?

great heads up. the million dollar question is will it improve my setup? as follows   NAS -> PC (Asus STX SPDIF out) -> Benchmark DAC2 HGC -> powered monitor / sub / headphone amp   previously i find SPDIF sounds the best and would love to add this to improve my setup. Any one knows?

+1   waiting for reviews too. is it out in the wild or reviewer's?

a lot of us were disgusted for the first few days :)

Ifi spdif purifier was supposed to be release end July right?

just off once. it actually puts the benchmark to standby mode which will keep them toasty. i hate it when the full power off when pressed off twice

Guess happened? Murphy strike again   I returned both noisy dual opamps back to Burson and after waited for about a month .....  Guess what happened?   They sent me only ONE!   The saga started around Xmas last year. I thought the single opamp would be an inexpensive upgrade to my US$200...